2023	Democratic	1,361,621	42.5%
	Republican	1,593,517	49.7%
	Other	250,852	7.8%

2022	Democratic	43,342,902	49.2%
	Republican	43,117,532	49.0%
	Other	1,560,701	1.8%

2021	Democratic	2,939,587	49.8%
	Republican	2,918,781	49.4%
	Other	47,446	0.8%

2020	Democratic	9,001,081	44.0%
	Republican	10,698,658	52.3%
	Other	743,230	3.6%

2019	Democratic	1,898,756	49.5%
	Republican	1,898,436	49.5%
	Other	39,626	1.0%

2018	Democratic	46,301,180	50.4%
	Republican	43,480,790	47.3%
	Other	2,136,865	2.3%

2017	Democratic	2,612,285	54.8%
	Republican	2,075,314	43.6%
	Other	75,708	1.6%

2016	Democratic	9,288,358	47.4%
	Republican	9,688,152	49.5%
	Other	602,691	3.1%

2015	Democratic	1,305,187	45.9%
	Republican	1,494,011	52.5%
	Other	45,543	1.6%

2014	Democratic	29,722,192	46.2%
	Republican	32,353,526	50.3%
	Other	2,208,599	3.4%

2013	Democratic	1,879,767	43.1%
	Republican	2,292,286	52.5%
	Other	191,302	4.4%

2012	Democratic	7,994,029	47.8%
	Republican	8,307,906	49.7%
	Other	405,873	2.4%

2011	Democratic	1,144,030	37.5%
	Republican	1,653,223	54.2%
	Independent	104,440	3.4%
	Other	147,645	4.8%

2010	Democratic	33,331,319	47.0%
	Republican	33,851,797	47.8%
	Other	3,704,944	5.2%

2009	Democratic	1,906,640	43.2%
	Republican	2,337,968	53.0%
	Independent	139,579	3.2%
	Other	26,188	0.6%

2008	Democratic	8,396,542	50.3%
	Republican	7,900,920	47.3%
	Other	408,899	2.4%

2007	Democratic	1,159,260	37.4%
	Republican	1,565,855	50.6%
	Independent	186,682	6.0%
	Other	185,407	6.0%

2006	Democratic	33,448,842	50.3%
	Republican	29,386,626	44.2%
	Other	3,675,914	5.5%

2005	Democratic	2,250,493	52.7%
	Republican	1,897,598	44.4%
	Other	125,786	2.9%

2004	Democratic	7,534,041	49.5%
	Republican	7,438,550	48.9%
	Other	253,734	1.7%

2003	Democratic	4,353,156	36.1%
	Republican	5,949,389	49.4%
	Independent	1,161,264	9.6%
	Other	579,766	4.8%

2002	Democratic	27,868,757	44.6%
	Republican	31,019,990	49.7%
	Other	3,580,525	5.7%

2001	Democratic	2,241,030	54.5%
	Republican	1,815,408	44.1%
	Other	57,448	1.4%

2000	Democratic	6,942,442	52.5%
	Republican	5,966,679	45.1%
	Other	319,730	2.4%

1999	Democratic	1,113,577	42.2%
	Republican	1,304,682	49.4%
	Independent	106,116	4.0%
	Other	114,841	4.4%

1998	Democratic	25,245,493	43.6%
	Republican	29,585,254	51.1%
	Independent	1,640,051	2.8%
	Other	1,474,982	2.5%

1997	Democratic	1,846,939	44.5%
	Republican	2,102,456	50.6%
	Other	205,263	4.9%

1996	Democratic	6,315,320	52.4%
	Republican	5,550,893	46.1%
	Other	181,854	1.5%

1995	Democratic	1,430,676	42.7%
	Republican	1,918,987	57.2%
	Other	3,965	0.1%

1994	Democratic	24,973,982	41.5%
	Republican	32,271,544	53.7%
	Other	2,863,279	4.8%

1993	Democratic	1,943,558	45.2%
	Republican	2,281,443	53.1%
	Other	74,879	1.7%

1992	Democratic	7,038,490	53.8%
	Republican	5,538,502	42.4%
	Other	498,267	3.8%

1991	Democratic	1,935,958	59.1%
	Republican	1,326,961	40.5%
	Other	11,253	0.3%

1990	Democratic	26,938,883	49.9%
	Republican	24,250,423	44.9%
	Other	2,844,182	5.3%