2012	Democratic	65,912,578	51.0%
	Republican	60,934,198	47.2%
	Other	2,365,926	1.8%

2008	Democratic	69,499,428	52.9%
	Republican	59,950,323	45.6%
	Other	2,013,371	1.5%

2004	Democratic	59,028,439	48.3%
	Republican	62,040,610	50.7%
	Other	1,226,503	1.0%

2000	Democratic	51,003,926	48.4%
	Republican	50,460,110	47.9%
	Independent	2,883,105	2.7%
	Other	1,070,334	1.0%

1996	Democratic	47,400,125	49.2%
	Republican	39,198,755	40.7%
	Independent	8,085,402	8.4%
	Other	1,591,119	1.7%

1992	Democratic	44,909,806	43.0%
	Republican	39,104,550	37.4%
	Independent	19,743,821	18.9%
	Other	665,746	0.6%

1988	Democratic	41,809,476	45.6%
	Republican	48,886,597	53.4%
	Other	898,613	1.0%

1984	Democratic	37,577,352	40.6%
	Republican	54,455,472	58.8%
	Other	620,409	0.7%

1980	Democratic	35,480,115	41.0%
	Republican	43,903,230	50.7%
	Independent	5,719,850	6.6%
	Other	1,406,483	1.6%

1976	Democratic	40,831,881	50.1%
	Republican	39,148,634	48.0%
	Other	1,551,069	1.9%

1972	Democratic	29,173,222	37.5%
	Republican	47,168,710	60.7%
	Other	1,402,095	1.8%

1968	Democratic	31,271,839	42.7%
	Republican	31,783,783	43.4%
	Independent	9,901,118	13.5%
	Other	243,258	0.3%

1964	Democratic	43,127,041	61.1%
	Republican	27,175,754	38.5%
	Independent	210,732	0.3%
	Other	125,757	0.2%

1960	Democratic	34,220,984	49.7%
	Republican	34,108,157	49.6%
	Independent	286,359	0.4%
	Other	216,982	0.3%

1956	Democratic	26,028,028	42.0%
	Republican	35,579,180	57.4%
	Independent	196,145	0.3%
	Other	217,975	0.4%

1952	Democratic	27,375,090	44.3%
	Republican	34,075,529	55.2%
	Other	301,323	0.5%

1948	Democratic	24,179,347	49.6%
	Republican	21,991,292	45.1%
	Independent	1,175,930	2.4%
	Other	1,446,966	3.0%

1944	Democratic	25,612,916	53.4%
	Republican	22,017,929	45.9%
	Other	346,218	0.7%

1940	Democratic	27,313,945	54.7%
	Republican	22,347,744	44.8%
	Other	240,424	0.5%

1936	Democratic	27,752,648	60.8%
	Republican	16,681,862	36.5%
	Other	1,213,189	2.7%

1932	Democratic	22,821,277	57.4%
	Republican	15,761,254	39.6%
	Other	1,169,367	2.9%

1928	Democratic	15,015,464	40.8%
	Republican	21,427,123	58.2%
	Other	364,425	1.0%

1924	Democratic	8,386,242	28.8%
	Republican	15,723,789	54.0%
	Independent	4,831,706	16.6%
	Other	155,370	0.5%

1920	Democratic	9,139,661	34.1%
	Republican	16,144,093	60.3%
	Other	1,481,426	5.5%

1916	Democratic	9,126,868	49.2%
	Republican	8,548,728	46.1%
	Other	860,989	4.6%

1912	Democratic	6,296,284	41.8%
	Republican	3,486,242	23.2%
	Independent	4,122,721	27.4%
	Other	1,143,587	7.6%

1908	Democratic	6,408,979	43.0%
	Republican	7,678,335	51.6%
	Other	801,925	5.4%

1904	Democratic	5,083,880	37.6%
	Republican	7,630,557	56.4%
	Other	810,658	6.0%

1900	Democratic	6,370,932	45.5%
	Republican	7,228,864	51.6%
	Other	397,633	2.8%

1896	Democratic	6,510,807	46.7%
	Republican	7,112,138	51.0%
	Other	315,729	2.3%

1892	Democratic	5,553,898	46.0%
	Republican	5,190,799	43.0%
	Independent	1,026,595	8.5%
	Other	296,735	2.5%

1888	Democratic	5,538,163	48.6%
	Republican	5,443,633	47.8%
	Other	407,050	3.6%

1884	Democratic	4,914,482	48.9%
	Republican	4,856,903	48.3%
	Other	288,760	2.9%

1880	Democratic	4,444,267	48.2%
	Republican	4,453,337	48.3%
	Other	319,806	3.5%

1876	Democratic	4,286,808	50.9%
	Republican	4,034,142	47.9%
	Other	97,709	1.2%

1872	Democratic	2,833,710	43.8%
	Republican	3,597,439	55.6%
	Other	40,834	0.6%

1868	Democratic	2,708,980	47.3%
	Republican	3,013,790	52.7%
	Other	46	0.0%

1864	Democratic	1,806,227	45.0%
	Republican	2,211,317	55.0%
	Other	658	0.0%

1860	Democratic	1,381,944	29.5%
	Republican	1,855,993	39.6%
	Independent	851,844	18.2%
	Other	591,486	12.6%

1856	Democratic	1,835,140	45.3%
	Republican	1,340,668	33.1%
	Independent	872,703	21.5%
	Other	3,094	0.1%