| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 248,651 | 204,774 | 459,926 | |
| 2020 | D | 267,270 | 197,552 | 473,418 | |
| 2016 | D | 215,456 | 188,303 | 423,625 | |
| 2012 | D | 237,356 | 169,675 | 414,195 | |
| 2008 | D | 256,299 | 178,815 | 441,985 | |
| 2004 | D | 251,090 | 184,423 | 445,138 | |
| 2000 | D | 240,176 | 160,176 | 424,654 | |
| 1996 | D | 224,554 | 132,343 | 410,234 | |
| 1992 | D | 196,233 | 129,444 | 451,496 | |
| 1988 | D | 238,779 | 188,796 | 430,792 | |
| 1984 | D | 237,631 | 222,882 | 461,671 | |
| 1980 | D | 215,283 | 169,209 | 420,473 | |
| 1976 | D | 229,397 | 220,310 | 452,843 | |
| 1972 | R | 218,105 | 256,462 | 476,023 | |
| 1968 | D | 250,054 | 167,853 | 453,165 | |
| 1964 | D | 344,910 | 125,962 | 471,576 | |
| 1960 | D | 277,203 | 211,957 | 489,564 | |
| 1956 | R | 166,930 | 292,657 | 459,587 | |
| 1952 | R | 196,378 | 253,927 | 451,249 | |
| 1948 | D | 197,618 | 175,118 | 383,372 | |
| 1944 | D | 195,905 | 185,975 | 383,235 | |
| 1940 | D | 189,779 | 183,664 | 374,435 | |
| 1936 | D | 183,555 | 152,312 | 342,208 | |
| 1932 | R | 131,012 | 141,059 | 282,930 | |
| 1928 | R | 126,449 | 144,726 | 281,789 | |
| 1924 | R | 40,780 | 112,070 | 191,480 | |
| 1920 | R | 40,436 | 99,762 | 157,796 | |
| 1916 | R | 45,622 | 53,638 | 102,460 | |
| 1912 | D | 33,518 | 19,185 | 85,113 | |
| 1908 | R | 45,185 | 52,182 | 99,660 | |
| 1904 | R | 36,582 | 49,669 | 89,132 | |
| 1900 | R | 39,833 | 44,767 | 86,657 | |
| 1896 | R | 30,172 | 45,612 | 77,879 | |
| 1892 | D | 32,431 | 32,340 | 68,403 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Erie County anchors western New York with nearly a million residents and has tracked a steady rightward shift in presidential margins over the past decade, even as Democrats retain a comfortable edge in the region's largest city.
The Democratic margin in Erie County reached its widest at forty-six points in 1964. The margin in 2024 was ten points — still decisive.
Erie County's loyalty is rooted in its place. Median household income of $72,839, a 74% non-Hispanic-white share, and a population of 950,622 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Providence County and Hampden County.
