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Portrait of Theresa MahPhoto: cdn.ilga.gov

IL · Officeholder

Theresa Mah

DState Representative · District 24

On the ballot Nov 3, 2026: Illinois House District 24

Biography

Theresa Mah is a Democratic Illinois state representative who has served in the House since 2017, currently representing District 24, and is seeking re-election on November 3, 2026.[1][2] She holds a Ph.D. in history and previously worked as a senior policy advisor to former Governor Pat Quinn.[1]

Theresa Mah earned a B.A. in history from the University of California, Berkeley, in 1991 and a Ph.D. in U.S. social and cultural history, race and ethnicity, and Asian American history from the University of Chicago in 1999.[1] Her career experience includes working as a senior policy advisor to former Governor Pat Quinn, a community development and policy consultant with the Coalition for a Better Chinese American Community, and an adjunct professor in Asian American studies at the University of Illinois at Chicago.[1] She served on the Illinois Advisory Council on Bilingual Education and the board of directors of Common Cause Illinois.[1]

Mah's tenure in the Illinois House began in 2017; Ballotpedia lists her as winning general elections for District 2 in 2016, 2018 and 2020 and for District 24 in 2022 and 2024.[1] She advanced from the Democratic primary on March 17, 2026.[1]

  1. 1.Theresa Mah · Ballotpedia Reference
  2. 2.Illinois House of Representatives elections, 2026 · Ballotpedia Reference

Researched from the cited sources on 2026-10-21. Not yet independently fact-checked.

Illinois House District 24

Theresa Mah is on the Nov 3, 2026 ballot for Illinois House District 24 as D. Not researched in depth — candidate list only.

Ballotpedia ↗

Votes by issue

Their recorded votes on bills that divided the chamber (unanimous votes left out), grouped by topic. A bill can sit under more than one topic. "With" and "against" compare each vote with how most Democrats voted. How topics are assigned

Where they stood out

Voted with most of their party on all 11 party-divided votes on file.

How this is counted

Their votes on the most contested roll calls

The votes in their chamber that came out closest and most divided by party, among those they voted on. How we rank

See all their split votes

Substantive votes concern legislation or nominations; procedural votes concern how the chamber considers them. A Yes vote applies to the motion shown, which may not be final passage.

SB 3484 · IL HOUSE

VEH CD-PLATES-REGISTRATION

YesVOTED

Motion: Third Reading

Passed 84–16·Substantive·May 31, 2026Roll call ↗
HB 2955 · IL HOUSE

EPA-PFAS WASTEWATER

YesVOTED

Motion: Concurrence

As introduced, creates a PFAS Wastewater Citizen Protection Committee to deliver a PFAS Action Plan within a year, update it annually and report, with technical help from the Illinois Sustainable Technology Center. The Act is repealed December 31, 2044.

AI summary — read the bill text ↗
Passed 78–39·Substantive·May 31, 2026Roll call ↗
HB 2955 · IL HOUSE

EPA-PFAS WASTEWATER

YesVOTED

Motion: Concurrence, Amendment 4

As introduced, creates a PFAS Wastewater Citizen Protection Committee to deliver a PFAS Action Plan within a year, update it annually and report, with technical help from the Illinois Sustainable Technology Center. The Act is repealed December 31, 2044.

AI summary — read the bill text ↗
Passed 78–39·Substantive·May 31, 2026Roll call ↗
SB 2696 · IL HOUSE

QUICK-TAKE-HOFFMAN ESTATES

YesVOTED

Motion: Third Reading

Passed 77–30·Substantive·May 29, 2026Roll call ↗
SB 3565 · IL HOUSE

PUB AID-TOWNSHIPS

YesVOTED

Motion: Third Reading

Allows townships to use public aid funds to run food banks, food pantries and in-kind aid programs for people who are poor, homeless or in immediate need, regardless of General Assistance eligibility.

AI summary — read the bill text ↗
Passed 73–35·Substantive·May 29, 2026Roll call ↗
SB 3403 · IL HOUSE

PEN CD-BD OF INVESTMENT AUDIT

YesVOTED

Motion: Third Reading

Passed 89–20·Substantive·May 28, 2026Roll call ↗
SB 3510 · IL HOUSE

CRIMES AGAINST CHILDREN

YesVOTED

Motion: Third Reading

Passed 102–3·Substantive·May 27, 2026Roll call ↗
HB 4909 · IL HOUSE

PEN CD-IMRF-EMPLOYEE

YesVOTED

Motion: Concurrence, Amendment 2

Passed 110–1·Substantive·May 27, 2026Roll call ↗
SB 3107 · IL HOUSE

QUICK-TAKE OAK PARK

YesVOTED

Motion: Third Reading

As introduced, allows the Village of Oak Park to use quick-take eminent domain for two years to acquire specified properties on Madison Street and Humphrey Avenue in Cook County for a public building and facility.

AI summary — read the bill text ↗
Passed 79–27·Substantive·May 27, 2026Roll call ↗
SB 2771 · IL HOUSE

SUICIDE PREVENTION INFORMATION

YesVOTED

Motion: Third Reading

Passed 106–5·Substantive·May 27, 2026Roll call ↗

Showing 10 of 16 votes in this collection. Coverage may be incomplete; each entry links to the official record.