VotePredictor
past elections

Colorado Senate

Mark Udall (D) vs Bob Schaffer (R)

Actual result
D+10.3
Final polls said
D+10.9
10 late polls · ✓
Model predicted
D+12.4
Winner
Dem

"Final polls said" averages polls from the last ~3 weeks — the call right before the vote, and how pollsters are rated. The model's prediction is walk-forward (trained only on earlier races).

Final rankings

How everyone who called this race did, ranked — VotePredictor shown inline (★).

Pollsters — each pollster's final poll vs the result

#PollsterFinal callMissCalled
1Big VillageD+10.00.3
2Suffolk UniversityD+11.00.7
3Harstad Strategic ResearchD+11.00.7
4GfK GroupD+12.01.7
5Garin-Hart-Yang Research GroupD+12.01.7
6VotePredictorD+12.42.1
7Public Opinion StrategiesD+13.02.7
8Behavior Research Center (Rocky Mountain Poll)D+13.02.7
9Scott Rasmussen (Rasmussen Reports)D+7.03.3
10Ciruli AssociatesD+7.03.3
11Quinnipiac UniversityD+14.03.7
12Public Policy PollingD+15.04.7
13YouGovD+15.04.7
14FTI ConsultingD+15.04.7
15Hill Research ConsultantsD+5.05.3
16Mason-Dixon Polling & StrategyD+4.06.3

Polls (22)

PollsterDatenPollMiss
Public Policy Polling2008-10-292023D+15.05
Mason-Dixon Polling & Strategy2008-10-28625D+4.06
YouGov2008-10-25685D+15.05
Big Village2008-10-25774D+10.00
FTI Consulting2008-10-25409D+15.05
GfK Group2008-10-24626D+12.02
Public Opinion Strategies2008-10-22500D+13.03
Behavior Research Center (Rocky Mountain Poll)2008-10-22500D+13.03
Scott Rasmussen (Rasmussen Reports)2008-10-16700D+7.03
Hill Research Consultants2008-10-15600D+5.05
Garin-Hart-Yang Research Group2008-10-13608D+12.02
Suffolk University2008-10-12450D+11.01
Quinnipiac University2008-10-101088D+14.04
Public Policy Polling2008-10-091331D+10.00
Quinnipiac University2008-10-05997D+5.05
Mason-Dixon Polling & Strategy2008-09-30625D+5.05
Scott Rasmussen (Rasmussen Reports)2008-09-23700D+2.08
Ciruli Associates2008-09-21501D+7.03
Public Policy Polling2008-09-201084D+8.02
Quinnipiac University2008-09-181418D+8.02
FTI Consulting2008-09-13402D+3.07
Harstad Strategic Research2008-09-08752D+11.01