2018	Democratic	480,007	49.4%
	Republican	440,320	45.3%
	Other	51,472	5.3%

2014	Democratic	130,722	23.9%
	Republican	386,340	70.6%
	Other	30,287	5.5%

2010	Democratic	298,171	41.6%
	Republican	382,350	53.4%
	Other	36,008	5.0%

2006	Democratic	255,684	43.9%
	Republican	279,003	47.9%
	Other	47,471	8.2%

2002	Democratic	110,935	22.0%
	Republican	344,001	68.2%
	Other	49,143	9.7%

1998	Democratic	182,281	42.0%
	Republican	223,892	51.6%
	Other	27,457	6.3%

1994	Democratic	200,026	52.7%
	Republican	156,875	41.3%
	Other	22,775	6.0%

1990	Democratic	207,878	64.8%
	Republican	95,789	29.9%
	Other	17,076	5.3%

1986	Democratic	187,268	71.9%
	Republican	65,081	25.0%
	Other	8,026	3.1%

1982	Democratic	128,132	53.4%
	Republican	100,104	41.8%
	Other	11,515	4.8%

1978	Democratic	76,001	39.6%
	Republican	108,097	56.3%
	Other	7,989	4.2%

1974	Democratic	114,114	67.4%
	Republican	28,959	17.1%
	Independent	26,285	15.5%

1970	Democratic	70,697	48.1%
	Republican	64,400	43.8%
	Independent	5,415	3.7%
	Other	6,479	4.4%

1966	Democratic	65,870	47.8%
	Republican	71,807	52.2%

1962	Democratic	64,784	66.8%
	Republican	32,145	33.2%

1930	Democratic	16,192	46.8%
	Republican	18,442	53.2%

1926	Democratic	14,521	47.0%
	Republican	16,374	53.0%

1922	Democratic	15,437	53.9%
	Republican	13,215	46.1%

1918	Democratic	12,875	52.1%
	Republican	11,845	47.9%

1914	Democratic	9,623	44.7%
	Republican	8,537	39.6%
	Other	3,391	15.7%

1906	Democratic	8,686	58.5%
	Republican	5,336	36.0%
	Other	815	5.5%

1898	Democratic	2,057	20.6%
	Republican	3,548	35.5%
	Independent	833	8.3%
	Other	3,570	35.7%

1894	Democratic	678	6.5%
	Republican	3,861	36.9%
	Independent	711	6.8%
	Other	5,223	49.9%