VotePredictor
past elections

Massachusetts Governor

Shannon O'Brien (D) vs Mitt Romney (R)

Actual result
R+4.8
Final polls said
D+0.6
7 late polls · ✗
Model predicted
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
1Suffolk UniversityR+3.01.8
2KRC ResearchR+2.02.8
3RKM Research and Communications Inc.D+1.05.8
4Harvard UniversityD+2.06.8
5Zogby AnalyticsD+2.06.8

Polls (13)

PollsterDatenPollMiss
Suffolk University2002-11-03500R+3.02
KRC Research2002-11-01400R+2.03
RKM Research and Communications Inc.2002-10-31465D+1.06
KRC Research2002-10-29400D+1.06
RKM Research and Communications Inc.2002-10-26465D+6.011
Harvard University2002-10-26400D+2.07
Suffolk University2002-10-21500R+0.54
Zogby Analytics2002-10-081001D+2.07
Suffolk University2002-10-05500D+12.017
RKM Research and Communications Inc.2002-10-02407D+1.06
Harvard University2002-10-01666EVEN5
KRC Research2002-09-25400D+6.011
RKM Research and Communications Inc.2002-09-18419D+3.08