In the 2018 election, Sean Casten defeated Peter Roskam, a Republican who had held the seat since 2007. Casten, a Democrat, campaigned on a platform of economic and environmental issues, while Roskam emphasized his experience in Congress. The race was close, but Casten ultimately won by a narrow margin.
Pondering Peter Roskam: Unraveling the Political Journey of an American Powerhouse