2022	Democratic	533,330	43.8%
	Republican	681,501	56.0%
	Other	1,815	0.1%

2020	Democratic	754,859	45.2%
	Republican	864,997	51.7%
	Other	51,972	3.1%

2016	Democratic	549,460	35.7%
	Republican	926,007	60.1%
	Other	65,569	4.3%

2014	Democratic	494,370	43.8%
	Republican	588,575	52.1%
	Other	46,755	4.1%

2010	Democratic	371,686	33.3%
	Republican	718,215	64.4%
	Other	26,162	2.3%

2008	Democratic	941,665	62.7%
	Republican	560,006	37.3%
	Other	1,247	0.1%

2004	Democratic	412,365	27.9%
	Republican	1,038,175	70.2%
	Other	28,688	1.9%

2002	Democratic	554,278	54.2%
	Republican	447,892	43.8%
	Other	20,905	2.0%

1998	Democratic	289,049	30.5%
	Republican	648,480	68.4%
	Other	10,378	1.1%

1996	Democratic	634,166	51.8%
	Republican	571,807	46.7%
	Other	18,081	1.5%

1992	Democratic	351,561	27.2%
	Republican	899,761	69.6%
	Other	41,172	3.2%

1990	Democratic	529,571	53.8%
	Republican	453,273	46.1%
	Other	1,089	0.1%

1986	Democratic	299,406	33.6%
	Republican	588,880	66.0%
	Other	3,476	0.4%

1984	Democratic	716,883	55.5%
	Republican	564,381	43.7%
	Other	11,436	0.9%

1980	Democratic	581,545	45.5%
	Republican	683,014	53.5%
	Other	12,475	1.0%

1978	Democratic	395,066	47.9%
	Republican	421,598	51.1%
	Other	7,990	1.0%

1974	Democratic	462,947	52.0%
	Republican	420,546	47.3%
	Other	6,068	0.7%

1972	Democratic	662,637	55.1%
	Republican	530,525	44.1%
	Other	10,157	0.8%

1968	Democratic	574,884	50.2%
	Republican	568,469	49.7%
	Other	733	0.1%

1966	Democratic	324,114	37.8%
	Republican	522,339	60.9%
	Other	11,043	1.3%

1962	Democratic	376,602	46.6%
	Republican	431,364	53.4%

1960	Democratic	595,119	48.1%
	Republican	642,463	51.9%

1956	Democratic	543,156	46.1%
	Republican	635,499	53.9%

1954	Democratic	402,712	47.7%
	Republican	442,409	52.3%

1950	Democratic	383,766	44.7%
	Republican	470,613	54.8%
	Other	4,144	0.5%

1948	Democratic	578,226	57.8%
	Republican	415,778	41.6%
	Other	6,408	0.6%

1944	Democratic	494,229	48.4%
	Republican	523,963	51.3%
	Other	3,495	0.3%

1942	Democratic	295,194	41.7%
	Republican	410,383	58.0%
	Other	2,282	0.3%

1936	Democratic	539,555	50.5%
	Republican	503,635	47.1%
	Other	25,567	2.4%

1914	Democratic	167,251	39.2%
	Republican	205,832	48.2%
	Independent	15,058	3.5%
	Other	38,961	9.1%