Pre-consolidation: Post-consolidation: Pre-consolidation: Post-consolidation: The 2025 New York's 21st congressional district special election is an expected special election to choose a new member of the U.S. House of Representatives.

The seat is expected to become vacant as Republican incumbent Elise Stefanik was chosen by president Donald Trump to be his nominee for U.S. ambassador to the United Nations (though as of February 13, 2025, she has not been confirmed by the Senate for the position).

County party officials will select their respective nominees in lieu of a primary.

[2] The district is primarily rural, but it also includes the cities of Ogdensburg, Glens Falls, Rome, and Plattsburgh.

The district includes most of the Adirondack Mountains and the Thousand Islands region.