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Illinois's 15th Congressional District
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Illinois actually voted.
Model Illinois's 15th Congressional District →
Current officeholder
Mary E. Miller Republican
2024 result
Republican R+97.6
2024 votes cast
268,634
Office
U.S. House
Who lives in this district
This district is home to about 749,694 people, median age 42.2, median household income $71,893.
Population
749,694
Median age
42.2
Median household income
$71,893
Bachelor's degree or higher
25.5%
Race & ethnicity: White 90.3% · Black 3.1% · Hispanic 2.9% · Asian 0.9%
Source: U.S. Census Bureau, 2019–2023 American Community Survey (5-year).
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model Illinois's 15th Congressional District in five steps
- Set the candidates. Name the contenders for the Illinois's 15th Congressional District (or keep the generic Democrat / Republican defaults). The map starts from real 2024 results in every precinct.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Drill to precincts. Zoom from the state down to individual precincts and override any of them by hand.
- Roll up & share. Roll the result up to chamber control, then publish a shareable, frozen link to your scenario.
Open Illinois's 15th Congressional District in the simulator →