2022	Democratic	6,462,164	60.1%
	Republican	4,298,530	39.9%

2018	Democratic	7,909,521	64.5%
	Republican	4,362,545	35.5%

2014	Democratic	3,799,711	53.6%
	Republican	3,285,334	46.4%

2010	Democratic	5,105,307	53.2%
	Republican	3,666,407	38.2%
	Other	827,503	8.6%

2006	Democratic	4,032,553	48.1%
	Republican	3,772,951	45.0%
	Other	580,069	6.9%

2002	Democratic	3,295,397	46.3%
	Republican	3,008,539	42.3%
	Other	810,474	11.4%

1998	Democratic	3,695,344	45.9%
	Republican	3,785,069	47.0%
	Other	572,535	7.1%

1994	Democratic	3,690,841	44.8%
	Republican	3,727,894	45.3%
	Other	815,463	9.9%

1990	Democratic	3,864,151	51.7%
	Republican	3,032,755	40.6%
	Other	578,658	7.7%

1986	Democratic	4,971,230	68.8%
	Republican	1,908,864	26.4%
	Other	341,050	4.7%

1982	Democratic	4,586,121	60.5%
	Republican	2,634,541	34.8%
	Other	355,264	4.7%

1978	Democratic	4,104,695	62.5%
	Republican	1,982,145	30.2%
	Other	482,133	7.3%

1974	Democratic	3,491,292	57.9%
	Republican	2,199,516	36.5%
	Other	335,786	5.6%

1970	Democratic	3,234,788	50.4%
	Republican	2,926,613	45.6%
	Other	255,022	4.0%

1966	Democratic	2,777,445	44.4%
	Republican	3,481,016	55.6%
	Other	826	0.0%

1962	Democratic	2,337,458	42.1%
	Republican	3,210,438	57.9%
	Other	175	0.0%

1958	Democratic	2,470,854	48.3%
	Republican	2,517,595	49.2%
	Other	130,078	2.5%

1954	Democratic	1,612,388	41.1%
	Republican	2,169,494	55.3%
	Other	142,452	3.6%

1950	Democratic	0	0.0%
	Republican	3,041,791	90.8%
	Other	309,079	9.2%

1946	Democratic	0	0.0%
	Republican	2,166,594	100.0%
	Other	765	0.0%

1942	Democratic	1,012,306	48.9%
	Republican	1,018,732	49.2%
	Other	38,005	1.8%

1938	Democratic	0	0.0%
	Republican	2,139,766	90.3%
	Independent	150,760	6.4%
	Other	78,093	3.3%

1934	Democratic	0	0.0%
	Republican	1,888,620	89.4%
	Independent	176,276	8.3%
	Other	48,045	2.3%

1930	Democratic	219,311	17.4%
	Republican	885,376	70.4%
	Independent	152,034	12.1%
	Other	133	0.0%

1926	Democratic	181,102	17.3%
	Republican	764,237	72.9%
	Independent	102,951	9.8%
	Other	7	0.0%

1922	Democratic	0	0.0%
	Republican	714,920	85.0%
	Independent	126,473	15.0%
	Other	20	0.0%

1918	Democratic	0	0.0%
	Republican	478,989	77.4%
	Independent	139,475	22.6%
	Other	21	0.0%

1914	Democratic	0	0.0%
	Republican	487,904	57.0%
	Independent	216,938	25.3%
	Other	151,438	17.7%

1910	Democratic	106,328	29.8%
	Republican	202,546	56.8%
	Independent	41,209	11.5%
	Other	6,799	1.9%

1906	Democratic	79,669	26.9%
	Republican	168,280	56.8%
	Independent	24,068	8.1%
	Other	24,348	8.2%

1902	Democratic	113,122	38.9%
	Republican	161,479	55.6%
	Independent	11,018	3.8%
	Other	4,820	1.7%

1898	Democratic	129,510	46.7%
	Republican	131,447	47.4%
	Independent	8,386	3.0%
	Other	7,774	2.8%

1894	Democratic	86,443	31.6%
	Republican	126,551	46.3%
	Independent	49,734	18.2%
	Other	10,671	3.9%

1890	Democratic	114,216	45.2%
	Republican	129,900	51.4%
	Independent	6,466	2.6%
	Other	1,995	0.8%

1886	Democratic	93,481	48.5%
	Republican	86,647	45.0%
	Independent	5,940	3.1%
	Other	6,655	3.5%

1882	Democratic	87,170	52.9%
	Republican	73,471	44.6%
	Other	4,069	2.5%

1879	Democratic	32,128	20.0%
	Republican	67,666	42.1%
	Independent	41,045	25.5%
	Other	19,938	12.4%

1875	Democratic	59,746	48.7%
	Republican	34,174	27.8%
	Independent	28,772	23.4%
	Other	30	0.0%

1871	Democratic	57,190	48.4%
	Republican	60,992	51.6%

1867	Democratic	48,573	52.7%
	Republican	41,663	45.2%
	Other	2,019	2.2%

1863	Democratic	43,694	40.2%
	Republican	65,023	59.8%