Mark Walker
State Senator, Illinois Senate District 27 · Democrat
OfficeholderNot running in 2026
Ballot status source: Illinois State Board of Elections — 2026 General Primary (March 17, 2026) Certified Vote Totals — 27th State Senate — not in primary; Carina Santa Maria (D) won D primary (21,284, 100%) · read Sep 24, 2026
The District
What Illinois Senate District 27 covers
Covers part of Cook County.
Includes Arlington Heights, Mount Prospect (part), Palatine (part), Rolling Meadows (part), Prospect Heights (part), Des Plaines (part), Buffalo Grove (part) and Schaumburg (part).
117 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
Certified results for Illinois Senate District 27
State Senator, District 27
2024 General Election · Nov 5, 2024| Candidate | Party | Votes | Share |
|---|---|---|---|
| Mark L. WalkerDemocrat | Democrat | 53,917 | 57.6% |
| Tom SchlenhardtRepublican | Republican | 39,769 | 42.4% |
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 27
2022 General Election · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| Ann GillespieDemocrat | Democrat | 40,774 | 59.1% |
| Bill RobertsonRepublican | Republican | 28,265 | 40.9% |
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
The 2026 Field
Who else is running for Illinois Senate District 27
- Carina Santa MariaDemocrat · On the 2026 ballot
- David MathisRepublican · On the 2026 ballot
Not on file for Mark yet: Key Votes, Their Money, Advertising, In Their Words, In the News, Reach Them, Polls, The Paper Trail. Coverage varies by state and office.
File read Sep 25, 2026. Each item names its source. Record ID p_hj83cz1qq.
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