New York's 21st congressional district is a congressional district for the United States House of Representatives that is represented by Republican Elise Stefanik. On November 11, 2024, President Donald Trump announced his intention to nominate Stefanik to serve as the United States Ambassador to the United Nations. However he withdrew the nomination on March 27, 2025. On December 19, 2025, Stefanik announced she would not seek re-election in the House of Representatives.