Theresa Mah

Seat	House District 24
Party	Democratic
Capitol office	Room 109 · State Capitol
Mailing address	Room 109, Capitol Building, Springfield, IL 62706
Capitol phone	217-782-2855
Legislative assistant	Summer Harris
Write to	office@reptheresamah.com (office address in the official directory)
Hometown	Chicago
Tenure	Serving since January 2017
Term limited	No term limits

Also listed in Room 109: Lisa Hernandez, Bob Rita

Committees 8

House Health Care Licenses Committee Vice chair standing
House Appropriations: Higher Education Committee standing
House Consumer Protection Committee standing
House Executive Committee standing
House Health Care Availability and Accessibility Committee standing
House Immigration and Human Rights Committee standing
House Museum, Arts, Culture and Entertainment Committee standing
House Public Health Committee standing

Bills, 104th General Assembly 39 as principal author · 275 as coauthor

All 39 bills as principal author ›

Coauthor of HB 1085, HB 1226, HB 1270, HB 1302, HB 1312, HB 1366, HB 1628, HB 1712, HB 1836, HB 2371, HB 2436, HB 2517 and 263 more.

Bills and sponsors: Open States bulk data (public domain dedication), 2026-11-public.pgdump; status is read from the official actions. About the momentum score

Effectiveness 104th General Assembly, 2025 to 2026

0.9165th of 118 in the House
45th percentile

Bills & joint resolutions authored	25
… passed committee / chamber / both	6 / 6 / 5
… became law	5
Carried in the other chamber (became law)	6 (5)
Points vs. House majority average	73 ÷ 79.85 = 0.91
Most-authored topics	Health & mental health (10), Children, families & social services (4), Budget & taxes (3)

House rankings · How the score works. A count of bill progress, not a judgment of the member's work.

Closest allies co-authorship, 2025 to 2026

Most bills written together

Kelly Cassidy DHouse 14 130
Dee Avelar DHouse 85 116
Kevin Olickal DHouse 16 115
Nicolle Grasse DHouse 53 108
Laura Faver Dias DHouse 62 107
Barbara Hernandez DHouse 50 103
Lilian Jiménez DHouse 4 103
Mike Crawford DHouse 31 101
Maura Hirschauer DHouse 49 97
Camille Lilly DHouse 78 87

“Written together” = 104th General Assembly bills and joint resolutions on which both are principal author or coauthor (measures with more than 60 sponsors are left out). Sharing bills does not imply a personal or political alliance.

District 24

Counties: Cook
Find your district: Who represents me?
Senate members sharing a county: Javier Cervantes (1), Omar Aquino (2), Mattie Hunter (3), Kimberly Lightford (4), Lakesia Collins (5), Sara Feigenholtz (6), Mike Simmons-Gessesse (7), Ram Villivalam (8), Laura Fine (9), Rob Martwick (10), Mike Porfirio (11), Celina Villanueva (12), Robert Peters (13), Emil Jones (14), Napoleon Harris (15), Willie Preston (16), Elgie Sims (17), Bill Cunningham (18), Mike Hastings (19), Graciela Guzmán (20), Cristina Castro (22), Seth Lewis (24), Karina Villa (25), Darby Hills (26), Mark Walker (27), Laura Murphy (28), Julie Morrison (29), Adriane Johnson (30), Don Harmon (39), Patrick Joyce (40), John Curran (41)

District 24 outlined; neighbours link to their members. Full map › · Census 2024 boundaries, simplified.

Official district map: see the official House page.

Lobbyist reports naming this member 2025 to 2026

No lobbyist expenditure reports naming this member are in our data.

Registered lobbyists and the organizations they represent are on our sister site, the Illinois Lobby Guide.

A reported expenditure is a legal, disclosed activity and does not imply wrongdoing.

Source

Copied from https://www.ilga.gov/House/Members/Details/3321 on November 2, 2026, through Open States people data (CC0), checked against official legislature rosters. Not endorsed by the Illinois House of Representatives.