2016Final results
2016 election for Ohio House District 21
Ohio House of Representatives · Ohio
Mike Duffey (R) won with 59.2% of the vote, defeating Ryan Koch (D) by 18.3 points.
Mike DuffeyRepublican · winner · incumbent
59.2%38,044
Ryan KochDemocrat
40.8%26,252
The same year, the district voted D+13.6 for president; this race was R+18.3, a split ticket.64,296 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET
The seat over time
D − R margin in this seat's races around 2016
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 4:52 AM ET