2022	Democratic	1,254,613	50.0%
	Republican	1,254,102	50.0%
	Other	418	0.0%

2018	Democratic	1,120,726	48.3%
	Republican	1,201,398	51.7%

2014	Democratic	696,054	47.1%
	Republican	782,361	52.9%
	Other	265	0.0%

2010	Democratic	739,290	47.8%
	Republican	804,851	52.0%
	Other	3,485	0.2%

2006	Democratic	899,007	60.2%
	Republican	595,317	39.8%

2002	Democratic	623,135	51.9%
	Republican	540,644	45.0%
	Other	37,564	3.1%

1998	Democratic	509,516	50.4%
	Republican	479,785	47.5%
	Other	21,478	2.1%

1994	Democratic	0	0.0%
	Republican	838,265	80.1%
	Other	207,710	19.9%

1990	Democratic	426,726	41.4%
	Republican	603,534	58.6%
	Other	337	0.0%

1986	Democratic	0	0.0%
	Republican	670,882	100.0%

1982	Democratic	238,917	34.3%
	Republican	427,914	61.4%
	Other	30,325	4.3%

1978	Democratic	242,169	46.0%
	Republican	260,564	49.5%
	Other	23,860	4.5%

1974	Democratic	302,230	55.9%
	Republican	238,546	44.1%

1970	Democratic	161,739	40.9%
	Republican	233,856	59.1%

1968	Democratic	228,560	49.6%
	Republican	232,685	50.4%

1966	Democratic	149,955	42.2%
	Republican	205,292	57.8%

1964	Democratic	223,179	49.3%
	Republican	229,653	50.7%

1962	Democratic	150,608	42.5%
	Republican	204,069	57.5%

1960	Democratic	171,289	44.0%
	Republican	218,198	56.0%

1958	Democratic	153,815	55.6%
	Republican	122,913	44.4%

1956	Democratic	151,324	54.4%
	Republican	126,718	45.6%

1954	Democratic	119,376	51.5%
	Republican	112,601	48.5%

1952	Democratic	116,047	46.4%
	Republican	133,963	53.6%

1950	Democratic	119,566	65.6%
	Republican	62,617	34.4%

1948	Democratic	108,707	66.1%
	Republican	55,751	33.9%

1946	Democratic	73,595	63.8%
	Republican	41,732	36.2%

1944	Democratic	89,429	70.2%
	Republican	37,982	29.8%

1942	Democratic	67,766	100.0%
	Republican	0	0.0%

1940	Democratic	107,072	75.6%
	Republican	33,692	23.8%
	Other	851	0.6%

1938	Democratic	86,588	79.8%
	Republican	21,951	20.2%

1936	Democratic	84,865	73.0%
	Republican	31,352	27.0%

1934	Democratic	69,836	75.2%
	Republican	22,383	24.1%
	Other	597	0.6%

1932	Democratic	74,176	68.7%
	Republican	33,311	30.8%
	Other	546	0.5%

1930	Democratic	61,813	100.0%
	Republican	0	0.0%

1928	Democratic	50,133	62.1%
	Republican	30,554	37.9%

1926	Democratic	43,567	63.6%
	Republican	24,911	36.4%

1924	Democratic	38,327	59.5%
	Republican	26,047	40.5%

1922	Democratic	35,335	58.1%
	Republican	25,512	41.9%

1920	Democratic	28,814	45.6%
	Republican	34,333	54.4%

1918	Democratic	27,671	59.8%
	Republican	17,657	38.2%
	Other	914	2.0%

1916	Democratic	28,218	53.5%
	Republican	21,297	40.4%
	Independent	3,224	6.1%

1914	Democratic	23,450	54.8%
	Republican	12,632	29.5%
	Independent	6,713	15.7%