Louise Slaughter Democratic Joseph Morelle Democratic Pre-consolidation: Post-consolidation: Pre-consolidation: Post-consolidation: A special election for New York's 25th congressional district was held following the death of U.S. Representative Louise Slaughter.

Democrat Joseph Morelle defeated Republican Jim Maxwell on November 6, 2018.

Incumbent representative Louise Slaughter died at the age of 88 on March 16, 2018, after suffering a concussion earlier in the month.

[2] Nominees for special elections are selected by the parties in the counties that comprise the congressional district.

As the winner of the special election, Morelle was sworn in on November 13 rather than waiting until the new Congressional term.