Democratic challenger Laura Gillen notched an upsetTuesday night over first-term GOP Rep. Anthony D’Esposito in New York City’s suburbs, flipping a highly coveted seat in a racially diverse district spanning the South Shore of western Long Island.

Republican incumbent Anthony D’Esposito was defeated in his bid for reelection in New York’s 4th Congressional District, losing to Democrat Laura Gillen, according to AP. D’Esposito faced allegations of improprieties following a New York Times report in September the freshman lawmaker gave taxpayer-funded jobs to his fiancee’s daughter and another woman described as his lover.

Gillen’s win puts a dent into Republicans’ recent gains across Long Island. Last year, Republicans won the Suffolk County executive seat. And D’Esposito’s 2022 victory flipped a seat that Democrats had held for nearly three decades.

Democrat Laura Gillen has declared victory over Anthony D'Esposito in New York's 4th Congressional District​. CBS News has not projected a winner.

Laura Gillen will defeat Rep. Anthony D’Esposito (R-N.Y.) to score a key pickup for Democrats eager to retake the House, Decision Desk HQ projects. New York has been seen as key to

Democrat Laura Gillen has defeated U.S. Rep. Anthony D’Esposito on Long Island, unseating the Republican after one term and rolling back recent GOP gains in New York City’s suburbs.

Democrat Laura Gillen has won the election in New York’s 4th Congressional District, beating incumbent Republican Rep. Anthony D’Esposito. The swing district covers southwest and central Nassau County.