| 2022 | Democratic | 7,129,122 | 67.0% | | | Republican | 0 | 0.0% | | | Independent | 3,514,593 | 33.0% | |
| 2018 | Democratic | 5,258,157 | 43.8% | | | Republican | 0 | 0.0% | | | Independent | 6,751,018 | 56.2% | |
| 2016 | Democratic | 3,598,855 | 26.5% | | | Republican | 0 | 0.0% | | | Independent | 9,994,454 | 73.5% | |
| 2008 | Democratic | 3,050,668 | 44.1% | | | Republican | 0 | 0.0% | | | Independent | 3,865,471 | 55.9% | |
| 2006 | Democratic | 1,501,183 | 25.5% | | | Republican | 0 | 0.0% | | | Independent | 4,395,470 | 74.5% | |
| 2002 | Democratic | 1,373,645 | 28.4% | | | Republican | 0 | 0.0% | | | Independent | 3,455,084 | 71.6% | |
| 2000 | Democratic | 4,994,361 | 71.6% | | | Republican | 0 | 0.0% | | | Independent | 1,979,780 | 28.4% | |
| 1998 | Democratic | 1,511,953 | 24.5% | | | Republican | 0 | 0.0% | | | Independent | 4,656,520 | 75.5% | |
| 1990 | Democratic | 1,562,018 | 30.7% | | | Republican | 0 | 0.0% | | | Independent | 3,529,714 | 69.3% | |
| 1986 | Democratic | 1,805,305 | 44.1% | | | Republican | 0 | 0.0% | | | Independent | 2,292,678 | 55.9% | |
| 1916 | Democratic | 137,107 | 20.2% | | | Republican | 0 | 0.0% | | | Independent | 542,239 | 79.8% | |
| 1908 | Democratic | 165,630 | 65.5% | | | Republican | 0 | 0.0% | | | Independent | 87,378 | 34.5% | |
| 1859 | Democratic | 828 | 25.2% | | | Republican | 0 | 0.0% | | | Independent | 2,457 | 74.8% | |
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