1966	Democratic	859,907	44.3%
	Republican	1,059,846	54.6%
	Other	22,026	1.1%

1964	Democratic	1,097,380	49.1%
	Republican	1,121,985	50.2%
	Other	14,975	0.7%

1962	Democratic	1,037,704	51.3%
	Republican	970,157	48.0%
	Other	15,174	0.8%

1960	Democratic	1,265,244	54.0%
	Republican	1,056,679	45.1%
	Other	21,233	0.9%

1958	Democratic	1,112,001	60.3%
	Republican	711,362	38.6%
	Other	19,530	1.1%

1956	Democratic	1,158,704	51.2%
	Republican	1,082,113	47.8%
	Other	21,180	0.9%

1954	Democratic	883,440	47.2%
	Republican	972,745	52.0%
	Other	14,282	0.8%

1952	Democratic	1,087,865	47.2%
	Republican	1,194,966	51.9%
	Other	20,615	0.9%

1950	Democratic	982,014	52.6%
	Republican	870,542	46.7%
	Other	13,009	0.7%

1948	Democratic	1,163,041	56.7%
	Republican	870,864	42.5%
	Other	17,584	0.9%

1946	Democratic	820,405	49.3%
	Republican	827,192	49.7%
	Other	16,166	1.0%

1944	Democratic	893,487	47.3%
	Republican	975,537	51.6%
	Other	19,821	1.0%

1942	Democratic	609,163	44.7%
	Republican	732,474	53.7%
	Other	22,429	1.6%

1940	Democratic	928,739	47.7%
	Republican	985,884	50.6%
	Other	34,400	1.8%

1938	Democratic	773,583	44.7%
	Republican	921,786	53.3%
	Other	33,422	1.9%

1936	Democratic	876,701	49.2%
	Republican	869,354	48.8%
	Other	35,278	2.0%

1934	Democratic	738,626	50.9%
	Republican	666,493	45.9%
	Other	46,911	3.2%

1932	Democratic	740,539	48.5%
	Republican	745,272	48.8%
	Other	41,395	2.7%

1930	Democratic	569,624	48.1%
	Republican	587,889	49.7%
	Other	26,057	2.2%

1928	Democratic	695,151	47.0%
	Republican	757,012	51.2%
	Other	26,179	1.8%

1926	Democratic	394,011	40.4%
	Republican	561,059	57.5%
	Other	20,876	2.1%

1924	Democratic	413,898	38.0%
	Republican	648,373	59.5%
	Other	26,721	2.5%

1922	Democratic	356,057	41.4%
	Republican	484,854	56.4%
	Other	18,826	2.2%

1920	Democratic	270,324	28.9%
	Republican	506,313	54.1%
	Independent	133,480	14.3%
	Other	25,842	2.8%

1919	Democratic	188,127	37.0%
	Republican	298,010	58.6%
	Other	22,797	4.5%

1918	Democratic	179,290	43.9%
	Republican	219,431	53.7%
	Other	10,144	2.5%

1917	Democratic	121,426	32.9%
	Republican	223,157	60.4%
	Independent	19,410	5.3%
	Other	5,633	1.5%

1916	Democratic	198,236	39.3%
	Republican	283,166	56.1%
	Other	23,586	4.7%

1915	Democratic	203,348	41.5%
	Republican	255,542	52.1%
	Other	31,321	6.4%

1914	Democratic	193,264	42.8%
	Republican	212,201	47.0%
	Independent	28,207	6.3%
	Other	17,360	3.8%

1913	Democratic	175,984	39.4%
	Republican	150,228	33.6%
	Independent	104,345	23.3%
	Other	16,603	3.7%

1912	Democratic	189,719	41.1%
	Republican	156,098	33.8%
	Independent	96,168	20.8%
	Other	19,539	4.2%

1911	Democratic	200,318	46.7%
	Republican	204,469	47.7%
	Independent	15,059	3.5%
	Other	8,657	2.0%

1910	Democratic	197,057	46.5%
	Republican	205,243	48.4%
	Independent	11,446	2.7%
	Other	9,926	2.3%

1909	Democratic	180,659	46.7%
	Republican	188,417	48.8%
	Independent	10,362	2.7%
	Other	7,012	1.8%

1908	Democratic	144,049	33.9%
	Republican	240,356	56.6%
	Independent	19,904	4.7%
	Other	20,225	4.8%

1902	Democratic	137,614	35.8%
	Republican	191,997	49.9%
	Independent	40,709	10.6%
	Other	14,106	3.7%

1901	Democratic	111,248	35.0%
	Republican	183,249	57.7%
	Other	23,255	7.3%

1900	Democratic	127,459	33.4%
	Republican	231,617	60.7%
	Other	22,802	6.0%

1899	Democratic	100,795	33.9%
	Republican	172,205	58.0%
	Other	24,044	8.1%

1898	Democratic	106,197	33.9%
	Republican	183,683	58.6%
	Independent	12,170	3.9%
	Other	11,510	3.7%

1897	Democratic	77,003	29.2%
	Republican	157,106	59.5%
	Independent	16,202	6.1%
	Other	13,632	5.2%