Staggered Senate
Senators serve terms of two or four years in a set pattern each decade, so a different share of the seats is on the ballot each election: 39 of 59 in 2026.
Illinois › Illinois State Senate · November 3, 2026 · Updated Oct 16, 2026
Illinois Legislative District 12
Celina Villanueva has no major-party opponent.
Celina Villanueva has no major-party opponent.
How this race is decided
The candidates
DemocraticIncumbent
Celina Villanueva
- Experience
- State legislature
The district
Lean D+45: how much more Democratic or Republican than the nation it votes for president.
Presidential vote
Precinct results re-aggregated to the current district lines.
Who lives here
- Population
- 202,618
- People per km²
- 5,290
- Adults with a B.A.+
- 24%
- White, no degree
- 8%of adults
- White 13%
- Hispanic 65%
- Black 6%
- Asian 15%
- Other / multiracial 2%
American Community Survey 2020–2024, aggregated from census tracts.
Past results
Results in the same-numbered district; earlier elections may have used different lines.
2024 President Vote in this district
43,523 two-party votes · D+38.2 · D+39.7 vs. the nation✓ Kamala Harris (D)69.1%
Donald Trump (R)30.9%
2022
23,303 votes · Uncontested by the other party✓ Celina Villanueva (D)100.0%
2020 President Vote in this district
52,764 two-party votes · D+65.0 · D+60.5 vs. the nation✓ Joe Biden (D)82.5%
Donald Trump (R)17.5%
2018 Earlier district lines
38,061 votes · Uncontested by the other party✓ Steven Landek (D)100.0%
2016 President Vote in this district
51,827 two-party votes · D+75.2 · D+72.9 vs. the nation✓ Hillary Clinton (D)87.6%
Donald Trump (R)12.4%
2014 Earlier district lines
24,886 votes · Uncontested by the other party✓ Steven Landek (D)100.0%