Illinois Senate District 55
State Senate District 55
Covers all of Fayette County, Clinton County, Clay County, Bond County and Richland County; parts of Marion County, Madison County, Washington County, Effingham County, Montgomery County and St. Clair County.
Who Holds This Seat
Running in 2026
No 2026 candidates are on file for this seat yet.
The District
Includes Centralia, Greenville, Highland, Olney, Salem, Troy, Vandalia, Breese, Carlyle, Flora, Nashville, Addieville and 71 more.
252 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
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President211 precinctsIllinois State Board of ElectionsOfficial vote | Donald J. Trump (R)64,266 · 71.7% | Kamala D. Harris (D)23,396 · 26.1% | R+45.6 | 89,595 | Illinois State Board of ElectionsOfficial vote |
| 2022 U.S. Senate196 precinctsIllinois State Board of ElectionsOfficial vote | Kathy Salvi (R)47,319 · 69.5% | Tammy Duckworth (D)19,414 · 28.5% | R+41.0 | 68,080 | Illinois State Board of ElectionsOfficial vote |
| 2022 Governor175 precinctsIllinois State Board of ElectionsOfficial vote | Darren Bailey (R)50,605 · 73.8% | Jb Pritzker (D)16,188 · 23.6% | R+50.2 | 68,608 | Illinois State Board of ElectionsOfficial vote |
| 2020 President237 precinctsIllinois State Board of ElectionsOfficial vote | Donald J. Trump (R)80,097 · 71.2% | Joseph R. Biden (D)29,909 · 26.6% | R+44.6 | 112,480 | Illinois State Board of ElectionsOfficial vote |
| 2020 U.S. Senate237 precinctsIllinois State Board of ElectionsOfficial vote | Mark C. Curran Jr. (R)75,181 · 67.7% | Richard J. Durbin (D)32,778 · 29.5% | R+38.2 | 110,981 | 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 55
2024 General Election · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Jason PlummerRepublican | Republican | 95,805 | 100.0% |
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
State Senator, District 55
2022 General Election · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| Jason PlummerRepublican | Republican | 75,849 | 100.0% |
| Write-In | 34 | 0.0% | |
| Connor Vlakancic | 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
State Senator, District 55
2020 General Election · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Darren BaileyRepublican | Republican | 78,010 | 76.7% |
| Cynthia Ann GivenDemocrat | Democrat | 23,726 | 23.3% |
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