New York's 40th congressional district
The 40th congressional district of New York was a congressional district for the United States House of Representatives in New York. It was created in 1913 as a result of the 1910 Census. It was eliminated in 1973 as a result of the 1970 Census. It was last represented by Henry P. Smith III who was redistricted into the 36th District.
Past Components
1953–1973:1945–1953:
1913–1945:
List of members representing the district
Election results
The following chart shows historic election results. Bold type indicates victor. Italic type indicates incumbent.| Year | Democratic | Republican | Other |
| 1970 | Edward Cuddy: 50,418 | Henry P. Smith III: 87,183 | |
| 1968 | Eugene P. O'Connor: 56,201 | Henry P. Smith III: 106,984 | James A. Peck : 1,949 |
| 1966 | William Levitt: 54,303 | Henry P. Smith III: 85,801 | |
| 1964 | Wesley J. Hilts: 81,531 | Henry P. Smith III: 90,745 | James A. Peck : 3,797 |
| 1962 | E. Dent Lackey: 67,004 | William E. Miller: 72,706 | |
| 1960 | Mariano A. Lucca: 85,005 | William E. Miller: 104,752 | Albert J. Taylor : 5,621 |
| 1958 | Mariano A. Lucca: 54,728 | William E. Miller: 90,066 | Hel J. Di Pota : 3,354 |
| 1956 | A. Thorne Hills: 64,872 | William E. Miller: 117,051 | |
| 1954 | Mariano A. Lucca: 46,956 | William E. Miller: 77,016 | Louis Longo : 2,233 Nick Curtis : 222 |
| 1952 | E. Dent Lackey: 69,087 | William E. Miller: 102,565 | John Touralchuk : 329 |
| 1950 | A. Roger Clarke: 52,363 | Kenneth B. Keating: 103,710 | Marie D'Amico : 1,624 |
| 1948 | George F. Rogers: 85,505 | Kenneth B. Keating: 90,305 | |
| 1946 | George F. Rogers: 55,321 | Kenneth B. Keating: 84,852 | |
| 1944 | George F. Rogers: 90,369 | Joseph J. O'Brien: 88,782 | |
| 1942 | Julian Park: 41,459 | Walter G. Andrews: 91,222 | |
| 1940 | Robert A. Hoffman: 76,468 | Walter G. Andrews: 119,972 | |
| 1938 | John L. Beyer: 50,705 | Walter G. Andrews: 92,271 | August Hein : 3,907 George Brickner : 551 |
| 1936 | John L. Beyer: 68,241 | Walter G. Andrews: 94,682 | Melvin A. Payne : 13,593 Thomas Justice : 3,481 Edwin Richards : 408 |
| 1934 | Frank S. Anderson: 50,532 | Walter G. Andrews: 69,353 | Herman J. Hahn : 4,627 |
| 1932 | Ralph W. Nolan: 54,363 | Walter G. Andrews: 92,929 | Herman J. Hahn : 3,209 |
| 1930 | Roland Crangle: 27,268 | Walter G. Andrews: 61,333 | Frank C. Perkins : 5,126 Thomas Justice : 3,535 |
| 1928 | John M. Powers: 46,860 | S. Wallace Dempsey: 99,896 | James Battistoni : 5,973 |
| 1926 | William F. Sheehan: 27,751 | S. Wallace Dempsey: 60,310 | Thomas Justice : 3,689 |
| 1924 | Thurman W. Stoner: 26,382 | S. Wallace Dempsey: 66,939 | Eustace Reynolds : 5,478 |
| 1922 | Philip Clancy: 21,590 | S. Wallace Dempsey: 41,754 | John W. Slacer : 2,530 |
| 1920 | Frank S. Nicholason: 19,253 | S. Wallace Dempsey: 56,129 | Augustus Meas : 5,389 |