Illinois's 12th District: 2026 result
CalledBost (R) wins.
Mike Bost (Republican) won Illinois's 12th District in the 3 November 2026 election. The seat stays Republican. The full vote count is not available yet; this page will show it when the source publishes it.
What stands out in IL-12
from the count and past results- Republican hold in an open district: Mike Bost succeeds Mike Bost, who was not on the ballot.
- Cook Partisan Voting Index for the district, on its 2026 lines: R+22.
IL-12 in 2024
same district linesHouse election, 5 November 2024
| Candidate | Party | Votes | % |
|---|---|---|---|
| Mike Bost | Republican | 272,754 | 74.2 |
| Brian Roberts | Democratic | 94,875 | 25.8 |
| Total | 367,629 | 100.0 |
Related races
- Illinois: every 2026 House district, the delegation before and after
- Other districts in Illinois: IL-1, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-11, IL-13, IL-14, IL-15, IL-16, IL-17
- Illinois Senate race · Juliana Stratton (D)
- Illinois governor's race · JB Pritzker (D)
- Closest House races: MN-1 (0.1), NC-5 (0.1), NC-3 (0.1), TN-4 (0.2), FL-27 (0.4)
- House results 2026: every race
Sources
- Votes and candidates: Wikipedia, 2026 United States House of Representatives elections in Illinois (revision 1384137665, November 6 at 3:10 PM EST), which cites the state election office and AP race calls.
- Race call and incumbent: Wikipedia, 2026 United States House of Representatives elections (revision 1385103391). A race is shown as called only when that article marks a winner.
- 2024 comparison: the 2024 House result from Wikipedia's 2024 House election articles; the 2024 presidential vote in the district from the district's own Wikipedia article.
- Text and figures from Wikipedia are available under CC BY-SA 4.0. Results are unofficial until the state certifies them; this page updates with the source.