2022	Democratic	6,287,076	58.8%
	Republican	4,405,781	41.2%

2018	Democratic	7,825,587	64.1%
	Republican	4,376,816	35.9%

2014	Democratic	4,176,793	58.8%
	Republican	2,925,895	41.2%

2010	Democratic	5,433,222	56.5%
	Republican	3,479,709	36.2%
	Other	711,041	7.4%

2006	Democratic	4,523,854	54.4%
	Republican	3,095,615	37.2%
	Other	700,732	8.4%

2002	Democratic	3,546,583	49.3%
	Republican	2,914,138	40.5%
	Other	732,748	10.2%

1998	Democratic	4,166,206	52.6%
	Republican	3,159,898	39.9%
	Other	594,307	7.5%

1994	Democratic	3,488,891	42.6%
	Republican	3,970,308	48.5%
	Other	734,585	9.0%

1990	Democratic	3,579,389	48.7%
	Republican	3,347,614	45.5%
	Other	425,739	5.8%

1986	Democratic	5,589,633	82.7%
	Republican	0	0.0%
	Other	1,166,913	17.3%

1982	Democratic	4,436,759	59.3%
	Republican	2,649,914	35.4%
	Other	397,295	5.3%

1978	Democratic	3,819,563	58.7%
	Republican	2,298,605	35.3%
	Other	390,381	6.0%

1974	Democratic	3,144,124	52.5%
	Republican	2,565,415	42.8%
	Other	279,431	4.7%

1970	Democratic	2,522,536	39.8%
	Republican	3,693,388	58.3%
	Other	120,465	1.9%

1966	Democratic	3,069,660	48.9%
	Republican	3,203,367	51.1%
	Other	778	0.0%

1962	Democratic	3,059,270	55.1%
	Republican	2,383,669	42.9%
	Other	110,616	2.0%

1958	Democratic	2,589,985	51.8%
	Republican	2,404,464	48.1%
	Other	1,058	0.0%

1954	Democratic	1,677,713	43.3%
	Republican	2,140,680	55.2%
	Other	58,279	1.5%

1950	Democratic	0	0.0%
	Republican	3,047,411	92.6%
	Other	245,282	7.4%

1946	Democratic	0	0.0%
	Republican	2,131,227	100.0%
	Other	482	0.0%

1942	Democratic	0	0.0%
	Republican	1,833,043	95.8%
	Independent	80,435	4.2%
	Other	139	0.0%

1938	Democratic	0	0.0%
	Republican	2,059,995	99.9%
	Other	1,939	0.1%

1934	Democratic	884,125	41.7%
	Republican	1,212,159	57.1%
	Other	25,852	1.2%

1930	Democratic	247,387	20.4%
	Republican	886,103	73.0%
	Independent	79,619	6.6%
	Other	18	0.0%

1926	Democratic	209,856	21.2%
	Republican	781,404	78.8%
	Other	7	0.0%

1922	Democratic	233,108	28.3%
	Republican	589,523	71.7%
	Other	49	0.0%

1918	Democratic	0	0.0%
	Republican	479,333	78.2%
	Independent	46,867	7.6%
	Other	86,868	14.2%

1914	Democratic	0	0.0%
	Republican	0	0.0%
	Independent	632,308	78.3%
	Other	174,936	21.7%

1910	Democratic	103,426	29.0%
	Republican	204,992	57.5%
	Independent	41,124	11.5%
	Other	6,831	1.9%

1906	Democratic	80,547	27.4%
	Republican	151,652	51.7%
	Independent	24,471	8.3%
	Other	36,926	12.6%

1902	Democratic	111,856	38.9%
	Republican	159,743	55.5%
	Independent	11,163	3.9%
	Other	4,859	1.7%

1898	Democratic	118,108	42.7%
	Republican	141,545	51.2%
	Independent	9,856	3.6%
	Other	6,930	2.5%

1894	Democratic	84,119	30.8%
	Republican	124,976	45.7%
	Independent	55,194	20.2%
	Other	9,213	3.4%

1890	Democratic	115,041	45.5%
	Republican	128,926	51.0%
	Independent	6,563	2.6%
	Other	2,091	0.8%

1886	Democratic	91,572	46.9%
	Republican	90,963	46.5%
	Independent	5,822	3.0%
	Other	7,061	3.6%

1882	Democratic	86,591	52.6%
	Republican	74,096	45.0%
	Other	4,023	2.4%

1879	Democratic	30,193	18.9%
	Republican	67,791	42.4%
	Independent	40,905	25.6%
	Other	21,132	13.2%

1875	Democratic	59,090	48.2%
	Republican	34,222	27.9%
	Independent	29,042	23.7%
	Other	354	0.3%

1871	Democratic	56,197	47.7%
	Republican	61,707	52.3%

1867	Democratic	48,147	51.6%
	Republican	45,243	48.4%

1863	Democratic	43,768	40.2%
	Republican	64,984	59.8%

1861	Democratic	34,116	28.6%
	Republican	51,868	43.5%
	Independent	33,153	27.8%

1859	Democratic	28,905	28.3%
	Republican	10,290	10.1%
	Independent	62,889	61.6%

1857	Democratic	57,641	61.6%
	Republican	16,529	17.7%
	Independent	19,348	20.7%
	Other	82	0.1%