2022	Democratic	1,320,619	52.4%
	Republican	1,200,411	47.6%

2018	Democratic	1,176,384	50.4%
	Republican	1,156,132	49.6%
	Other	169	0.0%

2014	Democratic	712,918	47.8%
	Republican	779,226	52.2%

2010	Democratic	694,131	41.8%
	Republican	966,934	58.2%

2006	Democratic	583,646	39.4%
	Republican	848,394	57.2%
	Other	51,128	3.4%

2002	Democratic	548,011	46.3%
	Republican	585,451	49.4%
	Other	51,100	4.3%

1998	Democratic	414,987	41.8%
	Republican	577,724	58.2%

1994	Democratic	404,216	37.5%
	Republican	604,024	56.0%
	Other	70,118	6.5%

1990	Democratic	591,664	58.6%
	Republican	418,361	41.4%

1986	Democratic	671,052	100.0%
	Republican	0	0.0%

1982	Democratic	425,795	61.5%
	Republican	243,363	35.2%
	Other	22,827	3.3%

1978	Democratic	282,736	54.9%
	Republican	208,222	40.5%
	Other	23,605	4.6%

1974	Democratic	271,474	50.8%
	Republican	263,274	49.2%

1970	Democratic	211,270	52.8%
	Republican	188,770	47.2%

1968	Democratic	248,381	54.7%
	Republican	205,454	45.3%

1966	Democratic	223,950	100.0%
	Republican	0	0.0%

1964	Democratic	288,875	100.0%
	Republican	0	0.0%

1962	Democratic	228,091	100.0%
	Republican	0	0.0%

1960	Democratic	243,028	100.0%
	Republican	0	0.0%

1958	Democratic	184,855	100.0%
	Republican	0	0.0%

1956	Democratic	172,661	63.3%
	Republican	100,224	36.7%

1954	Democratic	161,905	100.0%
	Republican	0	0.0%

1952	Democratic	143,724	58.2%
	Republican	103,061	41.8%

1950	Democratic	120,940	66.6%
	Republican	60,658	33.4%

1948	Democratic	106,337	64.5%
	Republican	55,644	33.7%
	Other	2,993	1.8%

1946	Democratic	74,543	65.7%
	Republican	38,991	34.3%

1944	Democratic	91,749	72.9%
	Republican	33,504	26.6%
	Other	635	0.5%

1942	Democratic	64,005	80.6%
	Republican	15,395	19.4%

1940	Democratic	108,535	78.0%
	Republican	30,678	22.0%

1938	Democratic	86,679	81.9%
	Republican	19,149	18.1%

1936	Democratic	80,439	69.8%
	Republican	34,864	30.2%

1934	Democratic	59,113	63.2%
	Republican	33,179	35.5%
	Other	1,273	1.4%

1932	Democratic	71,547	66.4%
	Republican	34,445	32.0%
	Other	1,774	1.6%

1930	Democratic	47,052	55.3%
	Republican	38,000	44.7%

1928	Democratic	44,740	54.4%
	Republican	37,502	45.6%

1926	Democratic	46,215	64.7%
	Republican	25,215	35.3%

1924	Democratic	42,635	77.7%
	Republican	12,269	22.3%

1922	Democratic	35,326	57.6%
	Republican	26,055	42.4%

1920	Democratic	30,705	49.2%
	Republican	31,643	50.8%

1918	Democratic	28,028	61.1%
	Republican	16,660	36.3%
	Independent	1,205	2.6%

1916	Democratic	33,075	60.9%
	Republican	18,182	33.5%
	Independent	3,073	5.7%

1914	Democratic	30,920	68.7%
	Republican	9,817	21.8%
	Independent	4,299	9.5%