Illinois House of Representatives seat · lines in effect since 2022
Illinois Representative District 1
A district of about 107,000 people, 79% Hispanic, 18% of adults with a bachelor's degree. It votes D+37.1 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
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 1.
Lower than 96% of seats.
Lower than 91% of seats.
Higher than 99% of seats.
Higher than 51% of seats.
Higher than 59% of seats.
Denser than 84% 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 2382% HispanicD+45.7Held DDistrict 2
68% Hispanic · 24% college gradsD+35.4Held DDistrict 22
71% HispanicD+15.6Held DDistrict 60
56% Hispanic · 21% college gradsD+42.8Held 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.
- Aaron M. Ortiz (D)
2023– · Won 2022 unopposed, 2024 unopposed, 2026 unopposed
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)