Horizon · our Election Day forecast: polls, plus fundamentals like incumbency, fundraising and past results.

Pulse · polls only: where the races stand today, with no fundamentals and wider uncertainty.

What's the difference?

Illinois › Illinois House of Representatives · State legislature · November 3, 2026 · Updated Oct 16, 2026

Illinois Representative District 24

Theresa Mah has no major-party opponent.

Theresa Mah has no major-party opponent.

The candidates

The district

Lean D+44: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentD+68.3D+66.1 vs. nation2020 presidentD+60.6D+56.1 vs. nation2024 presidentD+38.9D+40.4 vs. nation

Precinct results re-aggregated to the current district lines.

Who lives here

Population
102,794
People per km²
4,945
Adults with a B.A.+
35%
White, no degree
10%of adults
  • White 20%
  • Hispanic 47%
  • Black 4%
  • Asian 25%
  • Other / multiracial 3%

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

26,029 votes · D+56.3
✓ Theresa Mah (D)78.1%
Natalian Bolton (R)21.9%

2024 President Vote in this district

26,736 two-party votes · D+38.9 · D+40.4 vs. the nation
✓ Kamala Harris (D)69.4%
Donald Trump (R)30.6%

2022

14,532 votes · Uncontested by the other party
✓ Theresa Mah (D)100.0%

2020 Earlier district lines

26,824 votes · Uncontested by the other party
✓ Elizabeth Hernandez (D)100.0%

2020 President Vote in this district

31,822 two-party votes · D+60.6 · D+56.1 vs. the nation
✓ Joe Biden (D)80.3%
Donald Trump (R)19.7%

2016 President Vote in this district

31,341 two-party votes · D+68.3 · D+66.1 vs. the nation
✓ Hillary Clinton (D)84.2%
Donald Trump (R)15.8%