2018	Democratic	0	0.0%
	Republican	818,851	75.2%
	Other	270,313	24.8%

2010	Democratic	449,152	44.1%
	Republican	570,174	55.9%

2006	Democratic	469,311	51.7%
	Republican	438,778	48.3%

2002	Democratic	516,425	51.4%
	Republican	487,646	48.6%

1998	Democratic	513,065	60.5%
	Republican	335,305	39.5%

1994	Democratic	578,344	60.3%
	Republican	380,855	39.7%

1986	Democratic	492,551	57.6%
	Republican	363,182	42.4%

1982	Democratic	465,574	58.4%
	Republican	331,016	41.6%

1978	Democratic	314,355	45.8%
	Republican	372,308	54.2%

1974	Democratic	822,026	100.0%
	Republican	0	0.0%

1970	Democratic	712,425	100.0%
	Republican	0	0.0%

1966	Democratic	309,266	52.2%
	Republican	283,646	47.8%

1962	Democratic	543,140	100.0%
	Republican	0	0.0%

1958	Democratic	346,893	74.1%
	Republican	121,373	25.9%

1954	Democratic	347,397	100.0%
	Republican	0	0.0%

1950	Democratic	351,230	61.8%
	Republican	217,084	38.2%

1946	Democratic	254,406	57.1%
	Republican	191,033	42.9%

1942	Democratic	190,255	58.1%
	Republican	135,236	41.3%
	Other	2,062	0.6%

1938	Democratic	297,881	67.9%
	Republican	138,372	31.5%
	Other	2,762	0.6%

1934	Democratic	343,252	65.5%
	Republican	166,049	31.7%
	Independent	13,245	2.5%
	Other	1,538	0.3%

1930	Democratic	283,086	64.8%
	Republican	153,671	35.2%

1926	Democratic	199,940	57.1%
	Republican	148,797	42.5%
	Other	1,373	0.4%

1922	Democratic	282,802	61.8%
	Republican	169,135	37.0%
	Other	5,761	1.3%

1918	Democratic	102,094	54.3%
	Republican	78,208	41.6%
	Independent	7,679	4.1%

1914	Democratic	107,728	44.7%
	Republican	75,404	31.3%
	Independent	52,605	21.8%
	Other	5,145	2.1%

1910	Democratic	117,954	50.1%
	Republican	93,749	39.8%
	Independent	23,706	10.1%