Sean Casten is a member of the U.S. House, representing Illinois' 6th Congressional District. He assumed office on January 3, 2019. His current term ends on January 3, 2027. Casten is running for re-election to the U.S. House to represent Illinois' 6th Congressional District. He is on the ballot in the general election on November 3, 2026. He advanced from the Democratic primary on March 17, 2026.