Illinois · Candidate file
Mike Bost
U.S. Representative · IL-12 · Republican · in office since 2025
Photo: unitedstates/images congressional portrait (public domain), by Bioguide ID
The district
What IL-12 covers
Covers all of Wayne County, Jackson County, Randolph County, Jefferson County, Marion County, Washington County and 23 more and parts of St. Clair County, Coles County, Alexander County, Wabash County, Hardin County · includes Olive Branch, Carbondale, Herrin, Sparta, Marissa, Centralia, Mascoutah, Waterloo and 267 more
869 precincts on the map · hover or tap a precinct for its resultEveryone running here →
Precinct lines: U.S. Census Bureau 2020 voting districts (states may have redrawn some precincts since). District lines: U.S. Census Bureau. Street map © OpenFreeMap, © OpenMapTiles, © OpenStreetMap contributors.
The 2026 field
Who else is running for IL-12
- Julie FortierDemocrat
- Michael Eugene TabacchiRepublican
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