2010Flipped from DemocraticFinal resultsIncumbent defeated
2010 election for Illinois Legislative District 49
Illinois State Senate · Illinois
William McCann (R) won with 51.4% of the vote, defeating Deanna Demuzio (D) by 2.7 points, a seat Democrats won last time.
William McCannRepublican · winner
51.4%35,614
Deanna DemuzioDemocrat · incumbent
48.6%33,733
69,347 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 2010
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET