Races · house · 2026 · WI

house · open seat

Rebecca Cooke vs Derrick Van Orden

← WI house WI house →

Lean R R +4.0 · 176 days to election · 3 polls · 0 markets Last poll 55d ago Rating 1d ago

Where this race stands

Verified

Lean R · model 100% D

lean-r · uncertainty-high

Forecast · poliagg-v8

Predicted final margin

D +50.2

80% CI: D +32.7 → D +67.7 · win prob 100%

R+30R+15TIEDD+15D+30

Quality · inputs

Data quality · medium

Polls used	3
Days to election	181
Residual σ	13.66pt
Generated	5/6/2026

▼ Compare with other models1 models

poliagg-v8Ensemble (production)

D +50.2

80% CI D +32.7 → D +67.7

CV MAE 13.66

Polling average

Simple Weighted House-corrected Trimmed LOESS Kalman

Method:Weighted, plus each pollster's measured bias subtracted before averaging.

Show poll dots95% CI bandOverlay all methods|Toggle:

All polls · 3 results

Pollster:Population:Lean:High-quality only (weight ≥ 1.5)Sort:3 of 3 polls

End	Pollster	Weight	Lean	Sample	MoE	Pop	Trust signals	Results	Source
3/16/2026	Ragnar Research Partners	1.00	R	400	±5.0	LV	commissioned by R-aligned: Internal R-alignedno scored polls+2 commissioned by R-aligned: Internal R-aligned This poll was commissioned by a Republican-aligned committee, party, or PAC (Internal R-aligned). Such polls historically lean toward their sponsor. no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. uncorrelated with editorial consensus Across 80 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. likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.	Bryan Steil 50.0 · Mitchell Berman 41.0	poll arch
2/17/2026	Impact Research	1.00	L	500	±4.4	LV	commissioned by D-aligned: Internal D-alignedno scored polls+3 commissioned by D-aligned: Internal D-aligned This poll was commissioned by a Democratic-aligned committee, party, or PAC (Internal D-aligned). Such polls historically lean toward their sponsor. no scored polls Pollster has no historical polls with a known outcome in our database, so accuracy and bias cannot be measured. 82d old Poll was fielded 82 days ago. Older polls reflect an earlier state of the race and are weighted down in the rolling average. uncorrelated with editorial consensus Across 30 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. likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls.	Derrick Van Orden 48.0 · Rebecca Cooke 49.0	poll arch
10/15/2025	Public Policy Polling	1.00	—(D+1.1)	609	—	LV	commissioned by D-aligned: Internal D-aligned207d old+3 commissioned by D-aligned: Internal D-aligned This poll was commissioned by a Democratic-aligned committee, party, or PAC (Internal D-aligned). Such polls historically lean toward their sponsor. 207d old Poll was fielded 207 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. likely-voter screen Likely-voter screen — pollster filters respondents by reported turnout intent. Generally tighter for predicting elections than registered- or adult-population polls. bias D+1.1pt Across 72 historical scored polls the average error vs. actual margin is D+1.1pt.	Derrick Van Orden 42.0 · Rebecca Cooke 44.0	poll arch

Trust signals are deterministic flags computed from the pollster scorecard (track-record size, historical bias, aggregation weight) and the poll itself (sample size, population, age, citation availability). No interpretation; click any row to see the cited numbers behind each flag.

Editorial ratings · poll-vs-rater

3 raters

Rater	Rating	Updated	Poll D-marg.	Rater marg.	Δ poll−rater
The Cook Political Report	Safe D	Feb 6	-4.0	+18.0	-22.0
Inside Elections	Safe D	Mar 7	-4.0	+18.0	-22.0
Sabato's Crystal Ball	Safe D	Jul 15	-4.0	+18.0	-22.0

Δ POLL−RATER = polling-consensus margin minus the rater's implied bucket midpoint. Positive = polls more D than rater; negative = rater more D than polls. |Δ| < 0.6 well-aligned · 0.6–1.5 mild divergence · ≥1.5 contested call.

last poll 8 weeks ago (3/16/2026) last market quote — rating computed 1 day ago

Rating history (2 changes)

5/6/2026 Lean R R+4.0 via polls held 2d
5/4/2026 Safe D via pvi