| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 316,292 | 138,022 | 464,107 | |
| 2020 | D | 317,527 | 134,482 | 459,723 | |
| 2016 | D | 288,822 | 126,069 | 441,053 | |
| 2012 | D | 332,438 | 154,924 | 492,576 | |
| 2008 | D | 319,819 | 149,445 | 475,192 | |
| 2004 | D | 297,653 | 180,287 | 482,236 | |
| 2000 | D | 252,329 | 163,491 | 433,537 | |
| 1996 | D | 216,620 | 119,407 | 371,380 | |
| 1992 | D | 235,521 | 151,314 | 465,496 | |
| 1988 | D | 268,287 | 168,363 | 439,545 | |
| 1984 | D | 259,144 | 196,290 | 458,017 | |
| 1980 | D | 240,174 | 183,450 | 464,008 | |
| 1976 | D | 249,739 | 192,008 | 456,160 | |
| 1972 | D | 210,802 | 191,874 | 416,677 | |
| 1968 | D | 206,027 | 160,022 | 401,936 | |
| 1964 | D | 288,577 | 149,962 | 439,459 | |
| 1960 | D | 257,707 | 187,067 | 445,807 | |
| 1956 | R | 177,286 | 227,253 | 407,318 | |
| 1952 | R | 204,474 | 219,477 | 426,006 | |
| 1948 | D | 187,637 | 138,672 | 342,910 | |
| 1944 | D | 205,282 | 142,448 | 354,830 | |
| 1940 | D | 209,861 | 131,120 | 351,197 | |
| 1936 | D | 221,512 | 54,811 | 296,958 | |
| 1932 | D | 170,202 | 54,693 | 259,388 | |
| 1928 | D | 110,668 | 82,025 | 206,237 | |
| 1924 | R | 14,510 | 50,730 | 148,029 | |
| 1920 | R | 25,464 | 73,410 | 142,311 | |
| 1916 | D | 34,812 | 27,831 | 80,011 | |
| 1912 | D | 27,628 | 17,877 | 71,302 | |
| 1908 | R | 26,000 | 28,625 | 73,456 | |
| 1904 | R | 18,560 | 32,587 | 70,512 | |
| 1900 | R | 25,596 | 34,790 | 66,243 | |
| 1896 | R | 26,536 | 35,939 | 64,344 | |
| 1892 | D | 24,607 | 24,602 | 51,008 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Milwaukee County delivers the largest raw Democratic vote totals in Wisconsin, but turnout variation within the city itself has repeatedly determined how much of that margin actually offsets Republican strength in the WOW counties surrounding it.
The Democratic margin in Milwaukee County peaked at fifty-six points in 1936. By 1960 the county had flipped, voting Republican for the first time in many years. The 2024 margin was thirty-eight points, the most Democratic-leaning result in the county's modern history.
The economic context is the key. Milwaukee County's median household income of $64,435 sits well below state and national norms, and 17% of residents live below the federal poverty line. The shift here is part of a broader realignment of working-class places across the country. The county's voting pattern over the last decade is most similar to that of Ramsey County and Denver County.
