2022	Democratic	369,370	32.1%
	Republican	739,960	64.3%
	Other	41,402	3.6%

2022 (S)	Democratic	405,389	35.2%
	Republican	710,643	61.8%
	Other	34,449	3.0%

2020	Democratic	509,763	32.8%
	Republican	979,140	62.9%
	Other	67,458	4.3%

2016	Democratic	355,911	24.6%
	Republican	980,892	67.7%
	Independent	40,405	2.8%
	Other	70,839	4.9%

2014	Democratic	234,307	28.5%
	Republican	558,166	68.0%
	Other	28,260	3.4%

2014 (S)	Democratic	237,923	29.0%
	Republican	557,002	67.9%
	Independent	25,965	3.2%

2010	Democratic	265,814	26.1%
	Republican	718,482	70.6%
	Other	32,855	3.2%

2008	Democratic	527,736	39.2%
	Republican	763,375	56.7%
	Independent	55,708	4.1%

2004	Democratic	596,750	41.2%
	Republican	763,433	52.8%
	Independent	86,663	6.0%

2002	Democratic	369,789	36.3%
	Republican	583,579	57.3%
	Independent	65,056	6.4%

1998	Democratic	268,898	31.3%
	Republican	570,682	66.4%
	Other	20,133	2.3%

1996	Democratic	474,162	40.1%
	Republican	670,610	56.7%
	Other	38,378	3.2%

1994 (S)	Democratic	392,488	40.0%
	Republican	542,390	55.2%
	Independent	47,552	4.8%

1992	Democratic	494,350	38.2%
	Republican	757,876	58.5%
	Other	42,197	3.3%

1990	Democratic	735,684	83.2%
	Republican	148,814	16.8%

1986	Democratic	400,230	44.8%
	Republican	493,436	55.2%

1984	Democratic	906,131	75.6%
	Republican	280,638	23.4%
	Other	11,168	0.9%

1980	Democratic	478,283	43.5%
	Republican	587,252	53.5%
	Other	32,759	3.0%

1978	Democratic	493,953	65.5%
	Republican	247,857	32.9%
	Other	12,454	1.7%

1968	Democratic	419,658	46.2%
	Republican	470,120	51.7%
	Other	19,341	2.1%