The precursor to the district was the central Erie county seat numbered the 30th district in the 1990s. In the 1980s this area was in the 33rd district. In the 1970s it was numbered the 37th district, although certain suburban areas were in the 38th district (later the 31st). None of these districts included the Jamestown area, which had always been in the southern tier district (now the 29th district) in prior maps. The 27th district covered the area now in the 26th district in the 1990s and the Syracuse area (now the 25th district) in the 1980s. It was the Southern Tier seat now numbered the 22nd in the 1970s. In the 1960s this district was in the lower Hudson Valley covering the area now in the 19th district.
The district became obsolete following the 2020 United States census.[4] Following the reapportionment process after the 2020 census, New York came just 89 people short of retaining its 27th congressional district. The 435th seat instead went to Minnesota. The district was eliminated after the 2022 midterm elections.
In New York State electoral politics there are numerous minor parties at various points on the political spectrum. Certain parties would 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").
^McKinley, Jesse (June 24, 2020). "Republicans Retain House Seat in Special Election in Western N.Y." The New York Times. ISSN 0362-4331. Retrieved June 27, 2020.
^"NY Republican Chris Jacobs sworn in as newest House member". AP NEWS. July 21, 2020. Retrieved July 22, 2020.
^Orden, Erica (September 30, 2019). "Rep. Chris Collins to resign amid plans to plead guilty in insider trading case". CNN.
^Merica, Dan; Stark, Liz (April 26, 2021). "Census Bureau announces 331 million people in US, Texas will add two congressional seats". CNN. Retrieved April 26, 2021.
^"New York Special Election Results: 27th Congressional District". The New York Times. ISSN 0362-4331. Retrieved July 19, 2020.
^"2020 Election Results". New York State Board of Elections. Retrieved December 3, 2020.
Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
"Biographical Directory of the U.S. Congress - Retro Search". bioguideretro.congress.gov. Retrieved May 11, 2020.