Illinois 11th Congressional District
Congressional District 11
Covers parts of Kane County, McHenry County, Boone County, DeKalb County, DuPage County, Will County, Lake County and Cook County.
Who Holds This Seat
Running in 2026
Democrat · U.S. Representative
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Sep 24
- Raised
- $2,232,273cycle to date through Jun 30
- Cash on Hand
- $2,505,288cycle to date through Jun 30
View on FEC.govFEC, cycle to date through Jun 30, 2026
Republican
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Sep 24
- Raised
- $311,439cycle to date through Jun 30
- Cash on Hand
- $22,765cycle to date through Jun 30
View on FEC.govFEC, cycle to date through Jun 30, 2026
On File, Not Running
Republican · Ran for 11th Congressional District
Lost the 2026 primary
The District
Includes Aurora (part), Naperville (part), Bolingbrook (part), Campton Hills, McHenry (part), Woodstock, Batavia, Crystal Lake (part), Huntley (part), Belvidere (part), Hampshire (part), Lemont (part) and 34 more.
486 precincts · District lines: Congressional lines: U.S. Census Bureau (1:500,000 cartographic boundary, 119th Congress) · Precinct lines: Chicago Board of Election Commissioners, Boundaries - Ward Precincts (2023-2024) (data.cityofchicago.org 6piy-vbxa) for the City of Chicago; Cook County Clerk, Suburban Cook Election Precincts - Current (datacatalog.cookcountyil.gov k7sw-w3b8); DuPage County, Election_Precincts layer (gis.dupageco.org, current, retrieved 2026-09-24); U.S. Census Bureau 2020 VTDs elsewhere in Illinois; U.S. Census Bureau 2020 TIGER/Line VTDs where no official layer; Cook County 2020 elections: U.S. Census Bureau 2020 voting districts; Lake County IL GIS, LakeCounty_PoliticalBoundaries FeatureServer/7 (Voting Precincts); 2022 and 2024 generals; McHenry County GIS, Voting_Precincts FeatureServer/0; 2022 and 2024 generals
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President520 precinctsIllinois State Board of ElectionsOfficial vote | Kamala D. Harris (D)172,410 · 53.9% | Donald J. Trump (R)138,847 · 43.4% | D+10.5 | 320,127 | Illinois State Board of ElectionsOfficial vote |
| 2022 U.S. Senate526 precinctsIllinois State Board of ElectionsOfficial vote | Tammy Duckworth (D)127,824 · 55.2% | Kathy Salvi (R)99,494 · 43.0% | D+12.2 | 231,511 | Illinois State Board of ElectionsOfficial vote |
| 2022 Governor526 precinctsIllinois State Board of ElectionsOfficial vote | Jb Pritzker (D)125,680 · 54.4% | Darren Bailey (R)97,737 · 42.3% | D+12.1 | 231,068 | Illinois State Board of ElectionsOfficial vote |
| 2020 President521 precinctsIllinois State Board of ElectionsOfficial vote | Joseph R. Biden (D)211,493 · 55.1% | Donald J. Trump (R)163,011 · 42.5% | D+12.6 | 383,632 | Illinois State Board of ElectionsOfficial vote |
| 2020 U.S. Senate521 precinctsIllinois State Board of ElectionsOfficial vote | Richard J. Durbin (D)198,226 · 52.1% | Mark C. Curran Jr. (R)163,343 · 42.9% | D+9.2 | 380,383 | Illinois State Board of ElectionsOfficial vote |
Totals add up the certified precinct results for the precincts inside today's district lines. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.
Past Results
Representative in Congress, District 11
2024 General Election · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Bill FosterDemocrat | Democrat | 199,825 | 55.5% |
| Jerry EvansRepublican | Republican | 159,630 | 44.3% |
| Write-in | 652 | 0.2% | |
| Anna Schiefelbein | 186 | 0.1% |
Official vote — Illinois State Board of Elections (certified canvass, precinct vote totals by election authority) · Illinois State Board of Elections — Election Vote Totals by Precinct
Representative in Congress, District 11
2022 General Election · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| Bill FosterDemocrat | Democrat | 149,172 | 56.4% |
| Catalina LaufRepublican | Republican | 115,069 | 43.5% |
| Write-In | 40 | 0.0% | |
| Don Wagner | 0 | 0.0% | |
| Donald Wagner | 0 | 0.0% |
Official vote — Illinois State Board of Elections (certified canvass, precinct vote totals by election authority) · Illinois State Board of Elections — Election Vote Totals by Precinct
Representative in Congress, District 11
2020 General Election · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Bill FosterDemocrat | Democrat | 194,557 | 63.2% |
| Rick LaibRepublican | Republican | 112,807 | 36.7% |
| Write-In | 284 | 0.1% | |
| Jon Harlson | 13 | 0.0% | |
| John Harlson | 0 | 0.0% |
Official vote — Illinois State Board of Elections (certified canvass, precinct vote totals by election authority) · Illinois State Board of Elections — Election Vote Totals by Precinct