The election for Illinois' 4th congressional district takes place on 3 November 2026. Three candidates appear on the ballot: Patty Garcia (Democratic Party), Lupe Castillo (Republican Party) and Chris Getty (independent). The district spans Chicago neighborhoods including Pilsen, Brighton Park, and Bridgeport, and near-west suburbs including Cicero, Berwyn, Lyons, Brookfield, and Burbank.
Voter registration by mail closes October 6, 2026. Vote-by-mail applications must reach the election authority by October 29, 2026.
Online voter registration closes October 18, 2026.
Election day is November 3, 2026. Illinois also offers grace-period registration in person through Election Day. Official information comes from the Illinois State Board of Elections.
The 4th District is majority-Hispanic and spans Chicago's Southwest Side neighborhoods and several near-west suburbs. Rep. Jesus "Chuy" Garcia, in Congress since 2019, withdrew from the race on the candidate-filing deadline and endorsed his chief of staff, Patty Garcia, leaving her as the only Democrat on the March primary ballot — a decision that drew criticism from Democrats who said it denied voters a competitive primary.
Illinois State Board of Elections; Ballotpedia, "Illinois' 4th Congressional District election, 2026"; CBS Chicago (Feb. 2026).
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