VotePredictor
past elections

South Dakota Senate

Richard P. Weiland (D) vs M. Michael Rounds (R)

Actual result
R+20.9
Final polls said
R+14.1
7 late polls · ✓
Model predicted
R+13.5
Winner
Rep

"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
1ccAdvertisingR+22.01.1
2Public Opinion StrategiesR+24.03.1
3Monmouth University Polling InstituteR+14.06.9
4Rasmussen ReportsR+14.06.9
5Marist CollegeR+14.06.9
6Nielson Brothers PollingR+13.77.2
7VotePredictorR+13.57.3
8YouGovR+13.07.9
9SurveyUSAR+11.09.9
10Mason-Dixon Polling & StrategyR+9.011.9
11Public Policy PollingR+7.013.9
12Harper PollingR+4.016.9

Polls (14)

PollsterDatenPollMiss
Monmouth University Polling Institute2014-10-26429R+14.07
Rasmussen Reports2014-10-24908R+14.07
SurveyUSA2014-10-23611R+11.010
Mason-Dixon Polling & Strategy2014-10-22800R+9.012
Marist College2014-10-21730R+14.07
YouGov2014-10-20527R+13.08
Public Opinion Strategies2014-10-19500R+24.03
Harper Polling2014-10-10630R+4.017
SurveyUSA2014-10-03616R+7.014
Public Policy Polling2014-09-27703R+7.014
YouGov2014-09-26382R+15.06
Nielson Brothers Polling2014-09-23647R+13.77
ccAdvertising2014-09-231769R+22.01
SurveyUSA2014-09-05510R+11.010