Republican Rep. Mike Bost (Ill.) secured a third term in the House Tuesday, defeating Democrat Brendan Kelly.
The southern Illinois 12th District covers eastern St. Louis and is majority-urban.
Kelly, St. Clair County’s state attorney, easily secured the Democratic nomination to face Bost, a former Marine and firefighter who served in the Illinois state House before joining Congress.
In 2016, President Trump carried the district by nearly 15 points.