Illinois State Senate seat · lines in effect since 2022
Illinois Legislative District 12
A district of about 203,000 people, 65% Hispanic, 24% of adults with a bachelor's degree. It votes D+44.9 relative to the nation for president.
Where it sits among all 59 seats
Every Illinois State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.
Democratic
Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who lives here, compared
Grey bars show the spread of all 59 seats. Small marks are other seats in Illinois. The black marker is District 12.
Lower than 86% of seats.
Lower than 95% of seats.
Higher than 98% of seats.
Higher than 50% of seats.
Higher than 97% of seats.
Denser than 93% of seats.
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET
Seats most like this one
Nearest seats on demographics, density and lean.
District 2244% Hispanic · 30% college gradsD+21.4Not up in 2026District 30
39% Hispanic · 40% college gradsD+35.8Held DDistrict 1
73% Hispanic · 21% college gradsD+36.2Not up in 2026District 2
52% Hispanic · 41% college gradsD+60.9Held D
Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current lines; 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET
Who has held it
These lines took effect in 2022.
- Celina Villanueva (D)
2023– · Won 2022 unopposed, 2026 unopposed
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)