New York's 24th congressional district is located in Upstate New York in the Finger Lakes region, stretching alongside Lake Ontario from near Buffalo in the west to Watertown in the east. The district does not include Rochester, which is in the 25th district. Since 2023, it has been represented by Claudia Tenney. In the 2022 election it voted more strongly Republican than any other district in the state. Prior to the redistricting which took effect in 2023, the district included the city of Syracuse.

The current district includes all or parts of Cayuga, Wayne, Oswego, Ontario, Jefferson, Livingston, Niagara, Genesee, Wyoming, Seneca, Yates, and Orleans counties.

Results under current lines (since 2023)^[3]

Results under 2013–23 lines

• 1869–1873: All of Cayuga, Seneca, Wayne counties
• 1919–1945: Parts of Bronx and Westchester counties
• 1945–1971: Parts of Bronx county
• 1971–1973: Parts of Bronx and Westchester counties
• 1973–1983: Parts of Westchester county
• 1983–1993: All of Columbia, Greene, Saratoga, Warren and Washington counties; parts of Dutchess and Rensselaer counties
• 1993–2003: All of Clinton, Franklin, Fulton, Hamilton, Jefferson, Lewis, Oswego and St. Lawrence counties; parts of Essex and Herkimer counties
• 2003–2013: All of Chenango, Cortland, Herkimer and Seneca counties; parts of Broome, Cayuga, Oneida, Ontario, Otsego, Tioga and Tompkins counties
• From 2013 to 2023, the district included all of Cayuga, Onondaga, and Wayne counties, and the western part of Oswego County. Its largest city was Syracuse.
• From 2023 to 2033, the district included all or parts of Cayuga, Wayne, Oswego, Ontario, Jefferson, Livingston, Niagara, Genesee, Wyoming, Seneca, Yates, and Orleans counties.

In 2008, Michael Arcuri won the election with 130,799 votes (9,454 from Working Families Party line) to Richard L. Hanna's 120,880 out of 282,114 total votes. Note that in New York State electoral politics there are several minor parties at various points on the political spectrum. Certain parties will invariably endorse either the Republican or Democratic candidate for every office, hence the state electoral results contain both the party votes, and the final candidate votes (Listed as "Recap").

• List of United States congressional districts
• New York's congressional districts
• United States congressional delegations from New York