2012Final results
2012 election for Montana Senate District 37
Montana State Senate · Montana
Jon C. Sesso (D) won with 59.5% of the vote, defeating Daniel Oneill (R) by 19.0 points.
Jon C. SessoDemocrat · winner
59.5%5,417
Daniel OneillRepublican
40.5%3,691
9,108 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