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2026 candidates we're tracking in IL-11
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Bill Foster
Democratic
Incumbent
Foster is a physicist and businessman who co-founded a manufacturing company, Electronic Theatre Controls, at age 19, per the campaign site. He later spent more than two decades as a particle accelerator designer at Fermilab before winning a special election to Congress in 2008, per the campaign site.
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Jeff Walter
Republican
Walter is a retired U.S. Navy master chief petty officer with more than 20 years of service and currently serves as mayor of Elburn, Illinois, per the campaign site. He also has a career in technology consulting and holds degrees in finance, manufacturing management and business administration, per the campaign site.
About this race
Illinois's 11th Congressional District elects one member of the U.S. House of Representatives to a two-year term. Every House seat in the country is on the ballot in 2026. The Illinois primary is Tuesday, March 17, 2026, and the general election is Tuesday, November 3, 2026.