VotePredictor
past elections

South Dakota President

Barack Obama (D) vs John McCain (R)

Actual result
R+8.4
Final polls said
R+7.7
3 late polls · ✓
Model predicted
R+10.6
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
1Scott Rasmussen (Rasmussen Reports)R+9.00.6
2YouGovR+9.00.6
3Mason-Dixon Polling & StrategyR+7.01.4
4VotePredictorR+10.62.2
5GQRR+5.03.4
6American Research GroupR+16.07.6

Polls (6)

PollsterDatenPollMiss
Scott Rasmussen (Rasmussen Reports)2008-10-30500R+9.01
GQR2008-10-27613R+5.03
YouGov2008-10-25352R+9.01
Mason-Dixon Polling & Strategy2008-10-14800R+7.01
American Research Group2008-09-20600R+16.08
Scott Rasmussen (Rasmussen Reports)2008-09-09500R+17.09