2010Final results
2010 election for Illinois Representative District 84
Illinois House of Representatives · Illinois
Tom Cross (R) won with 68.2% of the vote, defeating Dennis Grosskopf (D) by 36.4 points.
Tom CrossRepublican · winner · incumbent
68.2%34,966
Dennis GrosskopfDemocrat
31.8%16,291
51,257 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