The Ballot Brief
Cook County, Illinois

Illinois Senate District 27

IllinoisCook County › Illinois Senate District 27

2 candidates are tracked for Illinois Senate District 27 on the November 3, 2026 ballot: Carina Santa Maria and David Mathis. Candidate information follows official Cook County election filings; verify with the official election office linked below.

Carina Santa Maria (Democratic), David Mathis (Republican) meet on the November 3 ballot. The seat is open: Sen. Mark L. Walker (Democratic), the sitting member per the General Assembly's roster, is not on the November ballot. Party nominees were chosen at the March 17 primary (plurality, no runoffs); independent and new-party candidates qualified by petition. The field is the State Board of Elections' 2026 General Election candidate list (status Active, read September 7, 2026). This seat is elected by district; only the district covering your address appears on your ballot.

Carina Santa Maria

Democratic

Carina Santa Maria is the Democratic candidate for Illinois Senate District 27 on the November 3, 2026 ballot, per the State Board of Elections' certified candidate list. Santa Maria is a Licensed Clinical Social Worker and Executive Director of Shelter, Inc., a child welfare agency in Arlington Heights, per her campaign site. She was elected an Arlington Heights Village Trustee in 2025. She is running for the open 27th District seat being vacated by Sen. Mark L. Walker.

2026 priorities (per the campaign site)

Source: candidate campaign site, roster verified 2026-09-01.

Campaign site →

David Mathis

Republican

David Mathis is a retired U.S. Marine Corps and Army National Guard veteran with 24 years of combined service, per his campaign site. He works as a security professional and lives in Arlington Heights.

2026 priorities (per the campaign site)

Source: candidate campaign site, roster verified 2026-09-01.

Campaign site →
Verify this race
Candidate roster from official Cook County Supervisor of Elections filings, last verified 2026-09-01. Bios and priorities carry their attribution inline.
Cross-check with the official Illinois election office, or see the full Cook County sample ballot and your exact ballot by address.