Congressman Darin LaHood, born and raised in Peoria, serves the constituents of the 18th District of Illinois. Sworn into the US House of Representatives on September 17, 2015, LaHood quickly transitioned into office after his special election win on September 10. He won re-election to serve his third full-term in Congress on November 3, 2020, defeating his opponent with 70-percent of the vote.

The 18th District spans 19 counties across central and west-central Illinois, ranging from McLean County (Bloomington-Normal) to Adams County (Quincy). LaHood serves close to 710,000 constituents.