Raymond Tierney won the race in Suffolk County, N.Y., with his Democratic opponent conceding late Tuesday night.
Republicans won two highly competitive district attorney races on Long Island that were seen as key tests of Democratic strength in the suburbs and support for left-leaning criminal justice measures. In Nassau County, State Senator Todd Kaminsky, a moderate Democrat, conceded on Wednesday to Anne Donnelly, a first-time Republican candidate, in a bitterly contested special election that Mr. Kaminsky had entered as the favorite. Just east in Suffolk County, Timothy Sini, the Democratic incumbent, conceded to Raymond Tierney, the Republican challenger, late Tuesday night. Both races, outside New York City, were seen as bellwethers of the Democratic Party’s standing in the suburbs, and they may have national resonance for Republicans as they seek to regain control of Congress in next year’s midterm elections.
