VotePredictor
past elections

Michigan Governor

Jennifer Granholm (D) vs Dick Posthumus (R)

Actual result
D+4.0
Final polls said
D+11.2
10 late polls · ✓
Model predicted
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
1SurveyUSAD+6.02.0
2EPIC-MRAD+9.05.0
3Marketing Resource Group (MRG)D+11.07.0
4Mitchell Research & CommunicationsD+13.09.0
5Detroit Free PressD+13.09.0

Polls (15)

PollsterDatenPollMiss
SurveyUSA2002-11-02730D+6.02
EPIC-MRA2002-11-01500D+9.05
Mitchell Research & Communications2002-10-29600D+13.09
EPIC-MRA2002-10-29500D+11.07
Detroit Free Press2002-10-28513D+13.09
SurveyUSA2002-10-26730D+13.09
Mitchell Research & Communications2002-10-22600D+8.04
EPIC-MRA2002-10-21500D+14.010
SurveyUSA2002-10-19730D+13.09
Mitchell Research & Communications2002-10-15600D+12.08
EPIC-MRA2002-10-14500D+10.06
SurveyUSA2002-10-05730D+14.010
EPIC-MRA2002-10-04500D+12.08
Marketing Resource Group (MRG)2002-09-28600D+11.07
EPIC-MRA2002-09-16600D+12.08