Illinois Congressional Delegation: 17 Representatives, 2 Senators
Last updated: 2026-10-19
House Delegation
17
U.S. Representatives
14 Democrats, 3 Republicans
Senate Delegation
2
U.S. Senators
2 Democrats
Delegation at a Glance
Illinois sends 19 members to Congress: 17 representatives in the House (14 Democrats, 3 Republicans) and 2 Senators in the Senate (2 Democrats).
- With 17 U.S. Representatives, Illinois has the 5th-largest House delegation among the 50 states (tied with 1 other state).
- Members of Illinois's delegation have served an average of 12.7 years in Congress.
State Highlights
- Richard Durbin is Illinois's longest-serving current member of Congress — in office since 1983 (43 years total).
- Richard Durbin is on the ballot for re-election in 2026.
Senators serve 6-year terms and representatives serve 2-year terms — see term end dates and election timing for each seat below.
Learn more about congressional term lengths, the Senate class schedule, or the upcoming 2026 election cycle.
2026 Election Picture for Illinois
Illinois's 2026 primary was held on March 17, 2026. Richard Durbin (Democratic) is up for re-election to the U.S. Senate in 2026. All 17 of Illinois's U.S. House seats are on the ballot in 2026, since House terms are two years. The general election is November 3, 2026.
For context on the 2026 map: in the 2024 presidential election Harris carried Illinois by 10.9 points.
2026 is a midterm election year — it falls in the middle of the presidential term, so there is no presidential race on Illinois's 2026 ballot. Every U.S. House seat nationwide is on the ballot every two years, and roughly a third of U.S. Senate seats — whichever class is next in rotation — are up in every congressional election, midterm or presidential.
Full Illinois 2026 primary details · Election Day countdown · How midterm elections work
Voting in Illinois
- Registration closes
- Likely closed (≈ Oct 18) · same-day registration available
- Early voting opens
- ≈ Sep 24
- Election Day
- Tuesday, November 3, 2026
Dates are approximate — states count the days differently and county schedules vary. Confirm yours at vote.gov. See all registration deadlines or early voting dates by state.
Senate Class Breakdown
U.S. Senators serve staggered 6-year terms split into three classes, so a state's two Senate seats usually aren't on the ballot in the same year. Illinois's two Senate seats are staggered across different classes.
The staggered system dates to the Constitution's framers, who wanted the Senate to change gradually rather than all at once — unlike the House, where every seat turns over every two years. Roughly one-third of the Senate's 100 seats (whichever class is next up) is on the ballot in any given election year, which is why only some states have a Senate race in any particular cycle.
- Richard Durbin is Class 2 — next up for election in 2026.
- Tammy Duckworth is Class 3 — next up for election in 2028.
Learn more about the Senate class schedule.
Senators
Which of Illinois's 17 districts are you in?
Your representative depends on your address, not just your state. Look yours up by address or ZIP, or browse all 17 below.
Representatives
17 totalAll 17 seats below: terms end January 3, 2027 — 71 days remaining.
| District | Representative | Party | |
|---|---|---|---|
| 1 | Jackson, Jonathan L. | Democratic | |
| 2 | Kelly, Robin L. | Democratic | |
| 3 | Ramirez, Delia C. | Democratic | |
| 4 | García, Jesús G. "Chuy" | Democratic | |
| 5 | Quigley, Mike | Democratic | |
| 6 | Casten, Sean | Democratic | |
| 7 | Davis, Danny K. | Democratic | |
| 8 | Krishnamoorthi, Raja | Democratic | |
| 9 | Schakowsky, Janice D. | Democratic | |
| 10 | Schneider, Bradley Scott | Democratic | |
| 11 | Foster, Bill | Democratic | |
| 12 | Bost, Mike | Republican | |
| 13 | Budzinski, Nikki | Democratic | |
| 14 | Underwood, Lauren | Democratic | |
| 15 | Miller, Mary E. | Republican | |
| 16 | LaHood, Darin | Republican | |
| 17 | Sorensen, Eric | Democratic | |
How to Contact Illinois's Delegation
Every member of Congress can be reached through the U.S. Capitol switchboard at (202) 224-3121 — ask the operator to connect you to any senator or representative by name, and you will be transferred directly to their office. Each member listed above also has a direct Washington, D.C. office line on their individual page, which staff typically answer during business hours (9am–5pm Eastern).
Congressional staff log the position of every caller, so calling or writing is one of the most direct ways for a constituent to weigh in on legislation before Illinois's delegation votes on it.
Put Illinois's delegation on your site
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Frequently Asked Questions
Who are Illinois's senators?
As of 2026-10-19, Illinois's U.S. Senators are Richard Durbin (Democratic) and Tammy Duckworth (Democratic). Party breakdown: 2 Democrats. If you are studying for the citizenship test — "Who is one of your state's U.S. Senators now?" — either name is a correct answer for Illinois.
How many representatives does Illinois have?
Illinois has 17 representatives in the U.S. House as of 2026-10-19 — 17 congressional districts, one congressman or congresswoman each, the 5th-largest House delegation among the 50 states (tied with 1 other state). House seats are reapportioned among the states after each decennial census based on population.
When is Illinois's 2026 primary?
Illinois's 2026 primary was held on March 17, 2026. A U.S. Senate seat is on the ballot this cycle, and all 17 of Illinois's U.S. House seats are also up for election in 2026, since House terms are two years.
Is Illinois's congressional delegation Democratic or Republican?
Illinois's delegation is split between parties as of 2026-10-19: House — 14 Democrats, 3 Republicans; Senate — 2 Democrats.
Who represents Illinois in Congress?
Illinois is represented in Congress by 17 U.S. Representatives in the House (14 Democrats, 3 Republicans) and 2 U.S. Senators in the Senate. See the full current roster below, including term end dates and contact information.
How many senators does Illinois have?
Two. Every state has exactly two U.S. Senators regardless of population, so Illinois has the same Senate representation as every other state: Richard Durbin (Democratic) and Tammy Duckworth (Democratic). House seats, by contrast, are apportioned by population — which is why Illinois has 17 of them.
How many members of Congress does Illinois have in total?
19 as of 2026-10-19 — 17 representatives in the House plus 2 senators. Congress has 535 voting members in all (435 representatives and 100 senators), so Illinois holds 3.6% of the seats.
When are Illinois's senators up for reelection?
Richard Durbin's seat (Class 2) is next on the ballot in November 2026; Tammy Duckworth's seat (Class 3) is next on the ballot in November 2028. Senators serve six-year terms in three staggered classes, so a state's two seats are never on the ballot in the same regular election.
How do I find out who represents me in Illinois?
Your U.S. Representative depends on which of Illinois's 17 congressional districts you live in; both senators represent the whole state. Enter your ZIP code or street address in the lookup at congresscountdown.com/who-is-my-representative to get your district and all three of your members of Congress — this is also the answer to the citizenship-test question "Name your U.S. Representative".
How do I contact Illinois's senators and representatives?
Every member card on this page lists the member's Washington office and phone number, and links to a profile with their official website. The Capitol switchboard, (202) 224-3121, connects to any Senate or House office by name. For what to say and which office to call — district office for casework, Washington office for legislation — see congresscountdown.com/info/contact-representative.