VotePredictor
past elections

South Dakota House

Stephanie Herseth Sandlin (D) vs Kristi Noem (R)

Actual result
R+2.2
Final polls said
R+0.6
4 late polls · ✓
Model predicted
D+1.2
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
1Mason-Dixon Polling & StrategyR+2.00.2
2Scott Rasmussen (Rasmussen Reports)R+5.02.8
3VotePredictorD+1.23.4
4Nielson Brothers PollingD+1.53.7
5PSB ResearchD+3.05.2
6Normington, Petts & AssociatesD+13.015.2

Polls (7)

PollsterDatenPollMiss
Nielson Brothers Polling2010-10-21679D+1.54
Scott Rasmussen (Rasmussen Reports)2010-10-20500R+5.03
Mason-Dixon Polling & Strategy2010-10-20800R+2.00
PSB Research2010-10-18399D+3.05
Scott Rasmussen (Rasmussen Reports)2010-10-04500R+3.01
Normington, Petts & Associates2010-09-22400D+13.015
Scott Rasmussen (Rasmussen Reports)2010-09-07500D+2.04