Illinois House of Representatives seat · lines in effect since 2022
Illinois Representative District 18
A district of about 106,000 people, 73% of adults with a bachelor's degree. It votes D+69.2 relative to the nation for president.
Where it sits among all 118 seats
Every Illinois House of Representatives 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
Every race on these lines
Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.
| 2022 | 2024 | 2026 | |
|---|---|---|---|
| Illinois House of Representatives | D+62.6 | D+57.9 | D+71.4 |
Outlined: the race for this seat itselfBlank: no race that year
Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET
Who lives here, compared
Grey bars show the spread of all 118 seats. Small marks are other seats in Illinois. The black marker is District 18.
Higher than 98% of seats.
Lower than 88% of seats.
Lower than 64% of seats.
Higher than 65% of seats.
Higher than 75% of seats.
Denser than 80% 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 1366% college gradsD+78.2Held DDistrict 11
82% college gradsD+73.2Held DDistrict 12
86% college gradsD+63.1Held DDistrict 14
56% college gradsD+78.1Held 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.
- Robyn Gabel (D)
2023– · Won 2022 by 62.6, 2024 by 57.9, 2026 by 71.4
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)