2 candidates are tracked for Illinois House District 42 on the November 3, 2026 ballot: Margaret A. DeLarosa and Stephanie W. Trussell. Candidate information follows official DuPage County election filings; verify with the official election office linked below.
Margaret A. DeLarosa (Democratic), Stephanie W. Trussell (Republican) meet on the November 3 ballot; Margaret A. DeLarosa is the sitting member, per the General Assembly's roster. Party nominees were chosen at the March 17 primary (plurality, no runoffs); independent and new-party candidates qualified by petition. The field is the State Board of Elections' 2026 General Election candidate list (status Active, read September 7, 2026). This seat is elected by district; only the district covering your address appears on your ballot.
State legislator. State legislators write and vote on state laws and the state budget, which fund schools, roads, prisons, universities and health programs, and set the rules for local governments and elections. Each member represents one district and serves on committees that shape bills before a floor vote. Terms are two years in most state houses and four in most state senates.
This race. Elected by district: only voters who live in the district see this race on their ballot. The sitting officeholder, Margaret A. DeLarosa, is on the ballot.
Illinois › DuPage County › Illinois House District 42
Democratic Incumbent
Margaret A. DeLaRosa was appointed to the Illinois House in October 2025 and represents the 42nd District, per her ilga.gov profile. She previously served as school board president for Glenbard Township High School District 87 and held leadership roles with Indivisible DuPage and the League of Women Voters of Glen Ellyn, and she holds an accounting degree from DePaul University. No campaign website was found as of September 7, 2026.
Republican
Per the campaign site.
Trussell is a former Illinois Republican candidate for lieutenant governor, per the campaign site.
Who is running for Illinois House District 42 in 2026?
2 candidates are tracked for Illinois House District 42 on the November 3, 2026 ballot: Margaret A. DeLarosa and Stephanie W. Trussell. Candidate information follows official DuPage County election filings; verify with the official election office linked below.
When is the Illinois House District 42 election in Illinois?
Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for Illinois are on the Illinois election hub at theballotbrief.com.
How do I see my exact DuPage County ballot?
Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.
Candidate roster from official DuPage County and state election office filings, last verified September 29, 2026. Bios and priorities carry their attribution inline.
Cross-check with the official Illinois election office, or see the full DuPage County sample ballot and your exact ballot by address.
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