2026 Illinois House of Representatives election – District 42IncumbentMargaret DeLaRosa DemocraticGeneral electionMargaret A. Delarosa DemocratStephanie W. Trussell RepublicanDemocratic primary resultsIn progress✓Margaret A. Delarosa58.9% 9,396Lynn LaPlante41.1% 6,568Republican primary resultsIn progress✓Stephanie W. TrussellUnopposed
