2022	Democratic	6,621,616	61.1%
	Republican	4,222,025	38.9%

2018	Democratic	6,019,422	54.2%
	Republican	0	0.0%
	Other	5,093,942	45.8%

2016	Democratic	7,542,759	61.6%
	Republican	0	0.0%
	Other	4,701,417	38.4%

2012	Democratic	7,864,624	62.5%
	Republican	4,713,887	37.5%

2010	Democratic	5,218,441	52.2%
	Republican	4,217,366	42.2%
	Other	564,353	5.6%

2006	Democratic	5,076,289	59.4%
	Republican	2,990,822	35.0%
	Other	474,365	5.6%

2004	Democratic	6,955,728	57.7%
	Republican	4,555,922	37.8%
	Other	541,645	4.5%

2000	Democratic	5,932,522	55.8%
	Republican	3,886,853	36.6%
	Other	804,239	7.6%

1998	Democratic	4,410,056	53.1%
	Republican	3,575,078	43.0%
	Other	326,771	3.9%

1994	Democratic	3,979,152	46.7%
	Republican	3,817,025	44.8%
	Other	717,912	8.4%

1992	Democratic	5,173,467	47.9%
	Republican	4,644,182	43.0%
	Other	982,054	9.1%

1992 (S)	Democratic	5,853,651	54.3%
	Republican	4,093,501	38.0%
	Other	835,591	7.7%

1988	Democratic	4,287,241	44.0%
	Republican	5,143,400	52.8%
	Other	312,888	3.2%

1986	Democratic	3,646,672	49.3%
	Republican	3,541,804	47.9%
	Other	210,046	2.8%

1982	Democratic	3,494,968	44.8%
	Republican	4,022,565	51.5%
	Other	287,817	3.7%

1980	Democratic	4,705,399	56.5%
	Republican	3,093,426	37.1%
	Other	528,483	6.3%

1976	Democratic	3,502,862	46.9%
	Republican	3,748,973	50.2%
	Other	218,751	2.9%

1974	Democratic	3,693,160	60.5%
	Republican	2,210,267	36.2%
	Other	199,005	3.3%

1970	Democratic	3,496,558	53.9%
	Republican	2,877,617	44.3%
	Other	117,982	1.8%

1968	Democratic	3,680,352	51.8%
	Republican	3,329,148	46.9%
	Other	92,965	1.3%

1964	Democratic	3,447,002	48.7%
	Republican	3,628,555	51.3%

1962	Democratic	2,452,839	43.4%
	Republican	3,180,503	56.3%
	Other	14,630	0.3%

1958	Democratic	2,927,693	57.0%
	Republican	2,204,337	42.9%
	Other	3,191	0.1%

1956	Democratic	2,445,918	45.6%
	Republican	2,892,918	54.0%
	Other	22,733	0.4%

1952	Democratic	0	0.0%
	Republican	3,982,448	87.7%
	Independent	542,270	11.9%
	Other	17,830	0.4%

1950	Democratic	1,502,507	40.8%
	Republican	2,183,454	59.2%
	Other	354	0.0%

1946	Democratic	1,167,161	44.2%
	Republican	1,428,067	54.1%
	Other	44,237	1.7%

1944	Democratic	1,728,155	52.3%
	Republican	1,576,553	47.7%
	Other	526	0.0%

1940	Democratic	0	0.0%
	Republican	2,238,899	82.5%
	Independent	366,044	13.5%
	Other	108,922	4.0%

1938	Democratic	1,372,314	54.4%
	Republican	1,126,240	44.7%
	Other	23,588	0.9%

1934	Democratic	0	0.0%
	Republican	1,946,572	94.5%
	Independent	108,748	5.3%
	Other	3,620	0.2%

1932	Democratic	943,164	43.4%
	Republican	669,676	30.8%
	Independent	560,088	25.8%
	Other	906	0.0%

1928	Democratic	282,411	18.2%
	Republican	1,148,397	74.1%
	Independent	92,106	5.9%
	Other	26,882	1.7%

1926	Democratic	391,599	36.9%
	Republican	670,128	63.1%
	Other	127	0.0%

1922	Democratic	215,748	23.8%
	Republican	564,422	62.2%
	Independent	70,748	7.8%
	Other	57,177	6.3%

1920	Democratic	371,580	40.7%
	Republican	447,835	49.0%
	Independent	36,545	4.0%
	Other	57,809	6.3%

1916	Democratic	277,852	29.5%
	Republican	574,667	61.1%
	Independent	49,341	5.2%
	Other	39,096	4.2%

1914	Democratic	279,896	31.6%
	Republican	254,159	28.7%
	Independent	255,232	28.8%
	Other	96,769	10.9%