The Winner

If you live in Illinois's 6th U.S. House District, you will continue to be represented in Congress by Rep. Sean Casten (D-IL), who has been declared the winner of the 2026 congressional race, according to the Associated Press. The AP called the race on Nov. 3, 2026, at 9:37 p.m. CST; vote counts from the general election are still being tallied, so definitive final shares and the margin are not yet available. ​

The Race

Republican Niki Conforti reached the general election ballot by winning her party's March 17, 2026, primary with about 82.2 percent of the Republican primary vote. Cook Political Report rated the seat Solid Democrat heading into Election Day, a view shared by Inside Elections and Sabato's Crystal Ball, all three of which labeled it Solid Democratic as of Nov. 3, 2026.

The district covers DuPage County and Cook County, including Chicago's 13th, 19th, and 23rd Wards, according to the U.S. House of Representatives. Illinois's 6th Congressional District has about 747,500 residents, a median household income of about $100,000, and a median age of about 41, according to Geographies data for the district. About 44.2 percent of adults hold a bachelor's degree or higher; the district is about 72.4 percent white, 16.1 percent Hispanic, 6.1 percent Asian, and 5.1 percent Black, with an unemployment rate of about 5.1 percent and about 7.5 percent of residents living below the poverty line.

What's Next

Casten is set to take office on January 3, 2027, according to the Office of the Clerk of the U.S. House of Representatives. Casten said his Integrated Local, Regional, and Interregional Transmission Planning Act would improve grid reliability and resilience while expanding access to affordable clean energy, according to the Office of Congressman Sean Casten, which released his statement on Sept. 17, 2026.

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