| 11/1/2020 | Keating Research/Onsight Public Affairs/Colorado Sun | 1.00 | — | 502 | — | LV | 🟡no scored polls🟡2016d old+3- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2016d old Poll was fielded 2016 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
newspaper-sponsored: The Colorado Sun Commissioned by The Colorado Sun, an independent media or academic sponsor. Independent sponsorship doesn't guarantee accuracy but rules out direct campaign funding.
| Cory Gardner 42.0 · John Hickenlooper 53.0 | pollarch |
| 11/1/2020 | Data for Progress | 1.00 | —(D+1.0) | 709 | — | LV | 🟡2016d old🟡high variance vs editorial consensus+3- 🟡
2016d old Poll was fielded 2016 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
high variance vs editorial consensus Stdev of (poll − rater consensus) across 127 historical paired polls exceeds 8pt — this pollster's results swing widely relative to where the editors place the same races. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🟢
accurate · bias D+1.0pt Across 50 historical scored polls this pollster's average error vs. actual margin is D+1.0pt — within ±1pt.
| Cory Gardner 45.0 · John Hickenlooper 54.0 | pollarch |
| 11/1/2020 | Swayable | 0.49 | L(D+7.7) | 443 | — | LV | 🟠historical bias D+7.7pt🟠weight 0.49+3- 🟠
historical bias D+7.7pt Across 15 historical scored polls the average error vs. actual margin is D+7.7pt — a measurable house effect. - 🟠
weight 0.49 Aggregation weight is 0.49 (1.0 ≈ average). Weight combines historical accuracy, methodology, and recency. - 🟡
2016d old Poll was fielded 2016 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 43.0 · John Hickenlooper 57.0 | pollarch |
| 10/31/2020 | Morning Consult | 1.00 | —(D+5.0) | 727 | — | LV | 🟠historical bias D+5.0pt🟡2017d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2017d old Poll was fielded 2017 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 44.0 · John Hickenlooper 52.0 | pollarch |
| 10/20/2020 | Morning Consult | 1.00 | —(D+5.0) | 788 | — | LV | 🟠historical bias D+5.0pt🟡2028d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2028d old Poll was fielded 2028 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 42.0 · John Hickenlooper 50.0 | pollarch |
| 10/16/2020 | RBI Strategies & Research | 1.00 | L | 502 | — | LV | 🟡no scored polls🟡2032d old+2- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2032d old Poll was fielded 2032 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 39.0 · John Hickenlooper 53.0 | pollarch |
| 10/15/2020 | RMG Research/PoliticalIQ | 1.00 | — | 800 | — | LV | 🟡no scored polls🟡2033d old+2- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2033d old Poll was fielded 2033 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 42.0 · John Hickenlooper 51.0 | pollarch |
| 10/14/2020 | Civiqs/Daily Kos | 0.91 | L(D+4.0) | 1013 | — | LV | 🟡2034d old⚪✓ verified 5d ago+1- 🟡
2034d old Poll was fielded 2034 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 42.0 · John Hickenlooper 53.0 | pollarch |
| 10/13/2020 | Keating Research/OnSight Public Affairs/Melanson | 1.00 | — | 519 | — | LV | 🟡no scored polls🟡2035d old+2- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2035d old Poll was fielded 2035 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 41.0 · John Hickenlooper 51.0 | pollarch |
| 10/11/2020 | Morning Consult | 1.00 | —(D+5.0) | 837 | — | LV | 🟠historical bias D+5.0pt🟡2037d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2037d old Poll was fielded 2037 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 40.0 · John Hickenlooper 50.0 | pollarch |
| 10/9/2020 | YouGov/University of Colorado | 1.00 | — | 800 | — | LV | 🟡no scored polls🟡2039d old+2- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2039d old Poll was fielded 2039 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 40.0 · John Hickenlooper 48.0 | pollarch |
| 10/6/2020 | SurveyUSA | 1.00 | —(D+1.5) | 1021 | — | LV | 🟡2042d old⚪✓ verified 5d ago+2- 🟡
2042d old Poll was fielded 2042 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 73 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 39.0 · John Hickenlooper 48.0 | pollarch |
| 9/20/2020 | Morning Consult | 1.00 | —(D+5.0) | 613 | — | LV | 🟠historical bias D+5.0pt🟡2058d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2058d old Poll was fielded 2058 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 42.0 · John Hickenlooper 49.0 | pollarch |
| 9/17/2020 | Morning Consult | 1.00 | —(D+5.0) | 599 | — | LV | 🟠historical bias D+5.0pt🟡2061d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2061d old Poll was fielded 2061 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 44.0 · John Hickenlooper 46.0 | pollarch |
| 9/5/2020 | Fabrizio Ward/Hart Research Associates | 1.00 | — | 800 | — | LV | 🟡no scored polls🟡2073d old+2- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2073d old Poll was fielded 2073 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 46.0 · John Hickenlooper 51.0 | pollarch |
| 9/1/2020 | Global Strategy Group | 1.00 | — | 800 | — | LV | 🟡no scored polls🟡2077d old+3- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2077d old Poll was fielded 2077 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 31 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 42.0 · John Hickenlooper 52.0 | pollarch |
| 8/30/2020 | Morning Consult | 1.00 | —(D+5.0) | 638 | — | LV | 🟠historical bias D+5.0pt🟡2079d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2079d old Poll was fielded 2079 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 39.0 · John Hickenlooper 48.0 | pollarch |
| 8/25/2020 | Morning Consult | 1.00 | —(D+5.0) | 600 | — | LV | 🟠historical bias D+5.0pt🟡2084d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2084d old Poll was fielded 2084 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 39.0 · John Hickenlooper 48.0 | pollarch |
| 8/19/2020 | Public Policy Polling | 1.00 | —(D+1.1) | 731 | — | unknown | 🟡2090d old🟡uncorrelated with editorial consensus+2- 🟡
2090d old Poll was fielded 2090 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 368 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - 🔵
bias D+1.1pt Across 72 historical scored polls the average error vs. actual margin is D+1.1pt.
| Cory Gardner 42.0 · John Hickenlooper 51.0 | pollarch |
| 8/15/2020 | Morning Consult | 1.00 | —(D+5.0) | 600 | — | LV | 🟠historical bias D+5.0pt🟡2094d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2094d old Poll was fielded 2094 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 38.0 · John Hickenlooper 49.0 | pollarch |
| 8/5/2020 | Morning Consult | 1.00 | —(D+5.0) | 600 | — | LV | 🟠historical bias D+5.0pt🟡2104d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2104d old Poll was fielded 2104 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 39.0 · John Hickenlooper 50.0 | pollarch |
| 7/26/2020 | Morning Consult | 1.00 | —(D+5.0) | 616 | — | LV | 🟠historical bias D+5.0pt🟡2114d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2114d old Poll was fielded 2114 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 42.0 · John Hickenlooper 48.0 | pollarch |
| 7/22/2020 | Morning Consult | 1.00 | —(D+5.0) | 600 | — | LV | 🟠historical bias D+5.0pt🟡2118d old+3- 🟠
historical bias D+5.0pt Across 29 historical scored polls the average error vs. actual margin is D+5.0pt — a measurable house effect. - 🟡
2118d old Poll was fielded 2118 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. - 🔵
tracks editorial consensus Across 62 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom.
| Cory Gardner 41.0 · John Hickenlooper 50.0 | pollarch |
| 6/30/2020 | Public Policy Polling | 1.00 | —(D+1.1) | 840 | — | unknown | 🟡2140d old🟡uncorrelated with editorial consensus+2- 🟡
2140d old Poll was fielded 2140 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 368 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - 🔵
bias D+1.1pt Across 72 historical scored polls the average error vs. actual margin is D+1.1pt.
| Cory Gardner 40.0 · John Hickenlooper 51.0 | pollarch |
| 5/3/2020 | Keating Research/OnSight Public Affairs/Melanson | 1.00 | — | 600 | — | LV | 🟡no scored polls🟡2198d old+2- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2198d old Poll was fielded 2198 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 36.0 · John Hickenlooper 54.0 | pollarch |
| 4/19/2020 | Montana State University Bozeman | 1.00 | — | 379 | — | LV | 🟡no scored polls🟡n=379+3- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
n=379 Sample size of 379 respondents implies a margin of error around ±5.0pt — wider than typical. - 🟡
2212d old Poll was fielded 2212 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 31.0 · John Hickenlooper 48.0 | pollarch |
| 10/14/2019 | Keating Research | 1.00 | — | 500 | — | LV | 🟡no scored polls🟡2400d old+2- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2400d old Poll was fielded 2400 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 42.0 · John Hickenlooper 53.0 | pollarch |
| 8/19/2019 | Emerson College | 1.00 | —(D+0.7) | 1000 | — | RV | 🟡2456d old⚪✓ verified 5d ago+3- 🟡
2456d old Poll was fielded 2456 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
registered voters Registered-voter sample — broader than likely-voter screens; typical for early-cycle polling before turnout signals stabilize. - 🔵
tracks editorial consensus Across 234 historical paired polls, this pollster's D-margins track the rater consensus (Cook / Sabato / IE / 538 / DDHQ etc.) with high correlation (r ≥ 0.85) and small mean delta (|Δ| ≤ 2pt). Their results align with conventional wisdom. - 🟢
accurate · bias D+0.7pt Across 117 historical scored polls this pollster's average error vs. actual margin is D+0.7pt — within ±1pt.
| Cory Gardner 40.0 · John Hickenlooper 53.0 | pollarch |
| 8/14/2019 | Global Strategy Group | 1.00 | — | 617 | — | LV | 🟡no scored polls🟡2461d old+3- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2461d old Poll was fielded 2461 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 31 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 39.0 · John Hickenlooper 49.0 | pollarch |
| 8/14/2019 | Global Strategy Group | 1.00 | — | 617 | — | LV | 🟡no scored polls🟡2461d old+3- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2461d old Poll was fielded 2461 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 31 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 38.0 | pollarch |
| 8/14/2019 | Global Strategy Group | 1.00 | — | 617 | — | LV | 🟡no scored polls🟡2461d old+3- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2461d old Poll was fielded 2461 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 31 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 39.0 · Mike Johnston 50.0 | pollarch |
| 8/11/2019 | Public Policy Polling | 1.00 | —(D+1.1) | 739 | — | unknown | 🟡2464d old🟡uncorrelated with editorial consensus+2- 🟡
2464d old Poll was fielded 2464 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 368 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - 🔵
bias D+1.1pt Across 72 historical scored polls the average error vs. actual margin is D+1.1pt.
| Cory Gardner 38.0 · John Hickenlooper 51.0 | pollarch |
| 7/31/2019 | Fabrizio Ward/AARP | 1.00 | — | 600 | — | LV | 🟡no scored polls🟡2475d old+2- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2475d old Poll was fielded 2475 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 45.0 · Mike Johnston 39.0 | pollarch |
| 2/4/2019 | Global Strategy Group | 1.00 | — | 818 | — | RV | 🟡no scored polls🟡2652d old+3- 🟡
no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. - 🟡
2652d old Poll was fielded 2652 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 31 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
registered voters Registered-voter sample — broader than likely-voter screens; typical for early-cycle polling before turnout signals stabilize.
| Cory Gardner 40.0 | pollarch |
| 1/5/2019 | DFM Research | 0.65 | L(D+6.1) | 550 | — | A | 🟡3 scored polls🟡adult sample+2- 🟡
3 scored polls Pollster has only 3 historical polls with a known outcome to score against — too few for stable accuracy estimates. - 🟡
adult sample Adult-population sample (no voter screen) — useful for general public opinion but not directly comparable to LV polls for predicting elections. - 🟡
2682d old Poll was fielded 2682 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched.
| Cory Gardner 38.0 | pollarch |
| 12/4/2018 | Change Research | 0.61 | L(D+3.7) | 540 | — | LV | 🟠historical bias D+3.7pt🟡2714d old+3- 🟠
historical bias D+3.7pt Across 18 historical scored polls the average error vs. actual margin is D+3.7pt — a measurable house effect. - 🟡
2714d old Poll was fielded 2714 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
high variance vs editorial consensus Stdev of (poll − rater consensus) across 30 historical paired polls exceeds 8pt — this pollster's results swing widely relative to where the editors place the same races. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - ⚪
likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.
| Cory Gardner 41.0 | pollarch |
| 8/3/2017 | Public Policy Polling | 1.00 | —(D+1.1) | 628 | — | unknown | 🟡3202d old🟡uncorrelated with editorial consensus+2- 🟡
3202d old Poll was fielded 3202 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 368 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - 🔵
bias D+1.1pt Across 72 historical scored polls the average error vs. actual margin is D+1.1pt.
| Cory Gardner 41.0 | pollarch |
| 7/1/2017 | Public Policy Polling | 1.00 | —(D+1.1) | 870 | — | unknown | 🟡3235d old🟡uncorrelated with editorial consensus+3- 🟡
3235d old Poll was fielded 3235 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. - 🟡
uncorrelated with editorial consensus Across 368 historical paired polls, this pollster's margins don't track the editorial consensus (Pearson r < 0.5). Independence from consensus is informational — could indicate genuine methodological independence or noisy results. - ⚪
✓ verified 5d ago auto-checked on 5/4/2026. Deterministic checks confirmed bounds + structure (percentages in [0,100], totals plausibly close to 100%, dates ordered). Source page itself was not re-fetched. - 🔵
newspaper-sponsored: Politico Commissioned by Politico, an independent media or academic sponsor. Independent sponsorship doesn't guarantee accuracy but rules out direct campaign funding. - 🔵
bias D+1.1pt Across 72 historical scored polls the average error vs. actual margin is D+1.1pt.
| Cory Gardner 39.0 | pollarch |