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
Filed under Illinois Senate District 27. The race page has 2 candidates, 2 certified results. See the race
Roles on File
Seats held and sought, elections and committees, newest first.
- HoldsIllinois Senate District 27State Senator
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
Not on file for Mark yet: Key Votes, Their Money, Advertising, In Their Words, In the News, Reach Them, 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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