Pollster · 371 of 1769
NBC News/Marist
Polls scored
24
Mean error
5.4 pt
Signed bias
D+2.38
Aggregation weight
0.75
Composite quality score
0–100 · weighted of 5 measured components59
of 100 · tier · moderate
Moderate quality. Worth checking individual signals before relying on this pollster's headline.
Pollster vs editorial consensus
alignedAcross 12 graded races, NBC News/Marist's released topline differed from the median editorial-rater consensus by an average of -0.8pp. That's well-aligned with the consensus — useful as a sanity check, less useful as a contrarian signal.
Mean delta
-0.8pp
Median delta
+1.0pp
Std-dev
5.2pp
N graded
12
Recent activity
Total all time
42
Last 30d
0
Last 90d
0
Last 180d
0
Per-cycle debrief appearances
| Cycle | Rank | Polls | MAE | Signed bias |
|---|---|---|---|---|
| 2018 | #25 / 25 | 3 | 7.83 pt | D+7.83 pp |
| 2014 | #13 / 21 | 7 | 4.48 pt | D+4.11 pp |
Recent polls
- 10/31/2020Arizona · Senate (special) · 2020Martha McSally 46.0 · Mark Kelly 52.0
- 7/21/2020Arizona · Senate (special) · 2020Martha McSally 41.0 · Mark Kelly 53.0
- 3/14/2020Arizona · Senate (special) · 2020Martha McSally 45.0 · Mark Kelly 48.0
- 2/26/2020North Carolina · Senate · 2020Thom Tillis 43.0 · Cal Cunningham 48.0
- 2/26/2020Texas · Senate · 2020John Cornyn 49.0 · MJ Hegar 41.0
- 2/20/2020South Carolina · Senate · 2020Lindsey Graham 54.0 · Jaime Harrison 37.0
- 10/31/2018Missouri · Senate · 2018Claire McCaskill 47.0 · Josh Hawley 44.0 · Japheth Campbell 3.0 · Jo Crain 2.0
- 10/27/2018Indiana · Senate · 2018Joe Donnelly 45.0 · Mike Braun 42.0 · Lucy Brenton 7.0
- 10/26/2018Tennessee · Senate · 2018Marsha Blackburn 51.0 · Phil Bredesen 46.0
- 10/2/2018Nevada · Senate · 2018Dean Heller 44.0 · Jacky Rosen 42.0 · Tim Hagan 8.0