HOUSE
Illinois IL-15 House2026
RACE AT A GLANCE
RACE TYPE
Incumbent running
Mary Miller (R)
COOK PARTISAN VOTING INDEX
Last updated : Nov 17, 2025D +50
R +50
R +20
Race summary
Rep. Mary Miller wasted no time establishing herself as a partisan lightning rod in 2021, suggesting that Adolf Hitler was “right about one thing” a mere two days after taking her oath of office.Key Dates
Filing Deadline: Nov 3, 2025
Primary Election: Mar 17, 2026
INCUMBENT
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CANDIDATES
Democrats
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DISTRICT DATA
Illinois - 15
Metro East: St. Louis suburbs, Quincy
Population Breakdown
Source: 2020 Census (VAP) for 2026
Past Presidential Results from this District
2024 Election Results
Source: Dave Leip
2020 Election Results
Source: Dave's Redistricting/VEST
RACE ANALYSIS
Race Analysis
Updated: Apr 23, 2025
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