Illinois Senate District 31: 2020 election
District Lines
The district lines on file took effect in 2022. The 2020 election used the lines before them, which are not on file yet; the map below draws today's lines.
136 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; Lake County IL GIS, LakeCounty_PoliticalBoundaries FeatureServer/7 (Voting Precincts); 2022 and 2024 generals
2020 Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2020 President148 precinctsIllinois State Board of ElectionsOfficial vote | Joseph R. Biden (D)70,280 · 59.6% | Donald J. Trump (R)44,671 · 37.9% | D+21.7 | 117,980 | Illinois State Board of ElectionsOfficial vote |
| 2020 U.S. Senate148 precinctsIllinois State Board of ElectionsOfficial vote | Richard J. Durbin (D)64,388 · 55.2% | Mark C. Curran Jr. (R)46,956 · 40.2% | D+14.9 | 116,742 | 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.
2020 Results
State Senator, District 31
2020 General Election · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| Melinda Bush | 58,274 | 58.5% | |
| Christopher Kasperski | 41,373 | 41.5% |
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
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