Illinois's 1st Congressional District

Illinois's 1st Congressional District is represented by Jonathan Jackson (Democrat), who has held the seat since 2023. Jackson has an overall VoteSee report card grade of F, voted in 93% of roll-call votes on bills this Congress, and votes with the Democratic majority 96% of the time. The district includes Chicago, New Lenox, and Homer Glen. It takes in all or part of 3 counties, and 69% of residents live in Cook County. About 740,000 people live in the district, and the median household income is $71,465.

Current Representative

Jonathan Jackson (Democrat) has represented Illinois's 1st Congressional District since 2023.

VoteSee report card grade: F
Attendance in the 119th Congress: 93% of roll-call votes on bills
Votes with the Democrat majority: 96%

See Jonathan Jackson's full voting record and issue positions →

2026 Election

U.S. House: Illinois 1st District

Winner: Jonathan Jackson.

Incumbent Jonathan Jackson is running for re-election. 2 candidates were on the Nov 3, 2026 ballot.

Jonathan Jackson (Democratic), incumbent: raised $539K, $40K cash on hand; VoteSee report card F; 93% attendance; votes with the Democratic majority 96% of the time
Christian Maxwell (Republican): raised $95K, $62K cash on hand

Polls: No public polls

See the full 2026 race →

District Demographics

Population: 739,958
Median household income: $71,465
Median age: 40
Median home value: $270,700
Bachelor's degree or higher: 32.3%

Source: American Community Survey 2020–2024 5-year estimates, 119th Congress boundaries.

How Jackson Voted Recently

Yea on American Enrichment Deployment Act (Nov 9, 2026) — Passed
Yea on Nuclear REFUEL (Recycling Efficient Fuels Utilizing Expedited Licensing) Act (Nov 9, 2026) — Passed
Yea on Retire through Ownership Act (Sep 16, 2026) — Passed
Yea on Water Resources Development Act of 2026 (Sep 16, 2026) — Passed
Yea on Ratepayer Protection Act (Sep 16, 2026) — Passed

Breaks with the Democrat majority

Nay on National Fraud Enforcement Division Act of 2026 (Sep 16, 2026) — Passed
Yea on Lindsey O. Graham Sanctioning Russia and Iran Act of 2026 (Sep 16, 2026) — Passed
Nay on Sunshine Protection Act of 2025 (Jul 14, 2026) — Passed

Who Held This Seat Before

Members of Congress who previously represented Illinois's 1st Congressional District. District lines are redrawn after each census, so earlier members may have represented a different area under this number.

Bobby Rush — Democrat (1993–2023)
Charles Hayes — Democrat (1983–1993)
Harold Washington — Democrat (1981–1985)
Bennett Stewart — Democrat (1979–1981)
Ralph Metcalfe — Democrat (1971–1979)
William Dawson — Democrat (1943–1971)
Arthur Mitchell — Democrat (1935–1943)
Oscar De Priest — Republican (1929–1935)
Martin Madden — Republican (1905–1929)
Martin Emerich — Democrat (1903–1905)
James Mann — Republican (1897–1903)
James Aldrich — Republican (1893–1897)

Where the District Is

Illinois's 1st Congressional District covers 612 square miles of land. Boundaries are for the current (119th) Congress.

Counties

Cook County (part): 69% of residents
Will County (part): 26% of residents
Kankakee County (part): 5% of residents

Largest communities

Chicago (part)
New Lenox
Homer Glen
Frankfort (part)
Mokena
Lockport (part)
Blue Island (part)
Bourbonnais (part)

Neighboring Districts

Illinois's 2nd Congressional District — Robin Kelly (Democrat)
Illinois's 4th Congressional District — Jesús García (Democrat)
Illinois's 6th Congressional District — Sean Casten (Democrat)
Illinois's 7th Congressional District — Danny Davis (Democrat)
Illinois's 11th Congressional District — Bill Foster (Democrat)
Illinois's 14th Congressional District — Lauren Underwood (Democrat)
Illinois's 16th Congressional District — Darin LaHood (Republican)

Illinois's U.S. Senators

Richard Durbin — Democrat, senior senator
Tammy Duckworth — Democrat, junior senator