Illinois Senate District 25
State Senate District 25
Covers parts of DuPage County, Kane County and Cook County.
Who Holds This Seat
Running in 2026
No 2026 candidates are on file for this seat yet.
The District
Includes Aurora (part), Bartlett (part), West Chicago (part), Batavia (part), North Aurora (part), Elgin (part), Naperville (part), Warrenville (part), Wayne (part) and South Elgin (part).
138 precincts · District lines: State senate lines: U.S. Census Bureau (1:500,000 cartographic boundary) · 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
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President97 precinctsIllinois State Board of ElectionsOfficial vote | Kamala D. Harris (D)33,935 · 54.4% | Donald J. Trump (R)26,621 · 42.7% | D+11.7 | 62,330 | Illinois State Board of ElectionsOfficial vote |
| 2022 U.S. Senate120 precinctsIllinois State Board of ElectionsOfficial vote | Tammy Duckworth (D)24,887 · 57.4% | Kathy Salvi (R)17,692 · 40.8% | D+16.6 | 43,325 | Illinois State Board of ElectionsOfficial vote |
| 2022 Governor120 precinctsIllinois State Board of ElectionsOfficial vote | Jb Pritzker (D)24,349 · 56.3% | Darren Bailey (R)17,562 · 40.6% | D+15.7 | 43,246 | Illinois State Board of ElectionsOfficial vote |
| 2020 President118 precinctsIllinois State Board of ElectionsOfficial vote | Joseph R. Biden (D)41,743 · 58.0% | Donald J. Trump (R)28,613 · 39.7% | D+18.2 | 72,029 | Illinois State Board of ElectionsOfficial vote |
| 2020 U.S. Senate118 precinctsIllinois State Board of ElectionsOfficial vote | Richard J. Durbin (D)39,784 · 55.9% | Mark C. Curran Jr. (R)28,124 · 39.5% | D+16.4 | 71,227 | 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
State Senator, District 25
2024 General Election · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Karina VillaDemocrat | Democrat | 46,205 | 58.9% |
| Heather BrownRepublican | Republican | 32,183 | 41.1% |
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
State Senator, District 25
2022 General Election · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| Karina VillaDemocrat | Democrat | 31,696 | 58.7% |
| Heather BrownRepublican | Republican | 22,279 | 41.3% |
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
State Senator, District 25
2020 General Election · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Karina VillaDemocrat | Democrat | 60,238 | 51.0% |
| Jeanette WardRepublican | Republican | 57,976 | 49.0% |
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