Mike Bost is a member of the U.S. House, representing Illinois' 12th Congressional District. He assumed office on January 3, 2015. His current term ends on January 3, 2027. Bost is running for re-election to the U.S. House to represent Illinois' 12th Congressional District. He is on the ballot in the general election on November 3, 2026. He advanced from the Republican primary on March 17, 2026.