2012Final results
2012 election for Ohio House District 21
Ohio House of Representatives · Ohio
Mike Duffey (R) won with 52.0% of the vote, defeating Donna Oconnor (D) by 4.0 points.
Mike DuffeyRepublican · winner · incumbent
52.0%32,416
Donna OconnorDemocrat
48.0%29,916
62,332 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 2012
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET