In the U.S. House, incumbents are running for reelection in all of Illinois’ 17 districts. That includes Chuy Garcia in the 4th Congressional District, who faces GOP challenger Lupe Castillo

Illinois Democrats in congressional races across the state hope to fend off challenges from Republicans fighting to keep their party's control of the U.S. House.The state's most competitive races involve two first-term representatives seeking reelection.

The supermajority party appears unlikely to expand their numbers as Republicans fended off several well-funded challenges across the state. In central Illinois, incumbent lawmakers in both parties held their own.