2000Final results
2000 election for Illinois Representative District 115
Illinois House of Representatives · Illinois
Mike Bost (R) won with 62.7% of the vote, defeating Robert L. Koehn (D) by 25.4 points.
Mike BostRepublican · winner · incumbent
62.7%24,137
Robert L. KoehnDemocrat
37.3%14,362
38,499 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 2000
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET