Barack Obama carried Illinois D+16.8.

Barack Obama (D) vs Mitt Romney (R) in Illinois, 2012. The state ran 13.0 points more Democratic than the nation (D+3.9 nationally).

Nominees: Barack Obama (D) · Mitt Romney (R)

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Illinois result

5,251,432 votes counted

Obama (D)

3,019,512

57.5%

Romney (R)

2,135,216

40.7%

All others

96,704

1.8%

Margin

D+16.8

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2012 presidential election

Illinois, 2012

ObamaD+16.8

How it voted

Share of the 2012 vote

Barack Obama ✓Democratic	57.5%	3,019,512
Mitt RomneyRepublican	40.7%	2,135,216
OtherAll other candidates	1.8%	96,704

D+60

R+60

102 counties, each filled by 2012 D-vs-R margin. Hover any county for its result.

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Illinois's presidential margins

1892–2024, the 2012 contest in context

Illinois's presidential margins

Year	Margin (D minus R)
1892	+3.1%
1896	−13.0%
1900	−8.4%
1904	−28.3%
1908	−15.5%
1912	+13.2%
1916	−9.2%
1920	−42.3%
1924	−35.5%
1928	−14.7%
1932	+13.2%
1936	+18.0%
1940	+2.4%
1944	+3.5%
1948	+0.8%
1952	−9.9%
1956	−19.2%
1960	+0.2%
1964	+18.9%
1968	−2.9%
1972	−18.5%
1976	−2.0%
1980	−7.9%
1984	−12.9%
1988	−2.1%
1992	+14.2%
1996	+17.5%
2000	+12.0%
2004	+10.3%
2008	+25.1%
2012	+16.8%
2016	+16.9%
2020	+16.9%
2024	+10.9%

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County results — 2012

102 counties; every row links to the county's full page.

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County	Won	Margin	Democratic	Republican	Total
Adams County	R	−35.1%	9,648	20,416	30,697
Alexander County	D	+13.7%	1,965	1,487	3,501
Bond County	R	−14.6%	3,020	4,095	7,375
Boone County	R	−5.7%	9,883	11,096	21,441
Brown County	R	−30.7%	787	1,513	2,364
Bureau County	R	−0.2%	8,134	8,164	16,686
Calhoun County	R	−14.0%	1,080	1,440	2,576
Carroll County	D	+1.5%	3,665	3,555	7,406
Cass County	R	−13.4%	2,053	2,707	4,878
Champaign County	D	+7.0%	40,831	35,312	78,609
Christian County	R	−23.0%	5,494	8,885	14,727
Clark County	R	−32.4%	2,591	5,144	7,886
Clay County	R	−44.1%	1,584	4,190	5,908
Clinton County	R	−29.9%	5,596	10,524	16,481
Coles County	R	−11.1%	9,262	11,631	21,437
Cook County	D	+49.3%	1,488,537	495,542	2,014,819
Crawford County	R	−31.6%	2,858	5,585	8,633
Cumberland County	R	−35.3%	1,641	3,509	5,295
De Witt County	R	−26.8%	2,601	4,579	7,368
DeKalb County	D	+5.5%	21,207	18,934	41,241
Douglas County	R	−36.7%	2,430	5,334	7,921
DuPage County	D	+1.1%	199,460	195,046	401,081
Edgar County	R	−32.8%	2,565	5,132	7,835
Edwards County	R	−51.1%	754	2,405	3,228
Effingham County	R	−52.0%	3,861	12,501	16,613
Fayette County	R	−34.4%	2,853	5,951	9,012
Ford County	R	−42.7%	1,656	4,229	6,024
Franklin County	R	−16.8%	7,254	10,267	17,914
Fulton County	D	+11.0%	8,328	6,632	15,411
Gallatin County	R	−18.0%	1,029	1,492	2,573
Greene County	R	−25.3%	2,023	3,451	5,637
Grundy County	R	−8.9%	9,451	11,343	21,313
Hamilton County	R	−32.9%	1,269	2,566	3,941
Hancock County	R	−17.8%	3,650	5,271	9,111
Hardin County	R	−34.0%	742	1,535	2,330
Henderson County	D	+12.2%	1,978	1,541	3,568
Henry County	D	+3.1%	12,332	11,583	24,405
Iroquois County	R	−44.5%	3,413	9,120	12,811
Jackson County	D	+14.3%	13,319	9,864	24,104
Jasper County	R	−41.2%	1,436	3,514	5,043
Jefferson County	R	−22.8%	6,089	9,811	16,320
Jersey County	R	−23.7%	3,667	6,039	10,001
Jo Daviess County	D	+1.2%	5,667	5,534	11,429
Johnson County	R	−42.0%	1,572	3,963	5,694
Kane County	D	+1.1%	90,332	88,335	181,725
Kankakee County	R	−3.4%	21,595	23,136	45,654
Kendall County	R	−3.3%	22,471	24,047	47,418
Knox County	D	+17.3%	13,451	9,408	23,356
Lake County	D	+8.3%	153,757	129,764	287,493
LaSalle County	R	−0.4%	23,073	23,256	47,405
Lawrence County	R	−30.8%	2,011	3,857	5,989
Lee County	R	−7.3%	6,937	8,059	15,348
Livingston County	R	−31.4%	5,020	9,753	15,077
Logan County	R	−32.0%	3,978	7,844	12,088
Macon County	R	−5.2%	22,780	25,309	49,030
Macoupin County	R	−7.0%	9,464	10,946	21,083
Madison County	R	−1.4%	58,922	60,608	122,885
Marion County	R	−19.1%	6,225	9,248	15,820
Marshall County	R	−14.2%	2,455	3,290	5,869
Mason County	R	−6.3%	2,867	3,265	6,296
Massac County	R	−33.7%	2,092	4,278	6,495
McDonough County	R	−1.4%	5,967	6,147	12,454
McHenry County	R	−8.8%	59,797	71,598	134,237
McLean County	R	−11.0%	31,883	39,947	73,469
Menard County	R	−30.0%	2,100	3,948	6,151
Mercer County	D	+7.4%	4,507	3,876	8,568
Monroe County	R	−26.7%	6,215	10,888	17,494
Montgomery County	R	−14.1%	5,058	6,776	12,188
Morgan County	R	−15.3%	5,806	7,972	14,142
Moultrie County	R	−27.0%	2,144	3,784	6,075
Ogle County	R	−16.7%	9,514	13,422	23,367
Peoria County	D	+4.4%	40,209	36,774	78,411
Perry County	R	−17.7%	3,819	5,507	9,549
Piatt County	R	−26.6%	3,090	5,413	8,742
Pike County	R	−35.4%	2,278	4,860	7,302
Pope County	R	−38.8%	650	1,512	2,222
Pulaski County	R	−5.8%	1,389	1,564	3,012
Putnam County	D	+1.8%	1,559	1,502	3,143
Randolph County	R	−17.5%	5,759	8,290	14,438
Richland County	R	−32.9%	2,362	4,756	7,282
Rock Island County	D	+21.8%	39,157	24,934	65,217
Saline County	R	−29.0%	3,701	6,806	10,720
Sangamon County	R	−8.6%	42,107	50,225	94,297
Schuyler County	R	−8.8%	1,727	2,069	3,902
Scott County	R	−26.4%	910	1,587	2,568
Shelby County	R	−33.5%	3,342	6,843	10,439
St. Clair County	D	+14.3%	67,285	50,125	119,827
Stark County	R	−16.3%	1,095	1,528	2,662
Stephenson County	R	−1.6%	10,165	10,512	21,128
Tazewell County	R	−17.8%	24,438	35,335	61,282
Union County	R	−21.9%	3,137	4,957	8,318
Vermilion County	R	−13.2%	12,878	16,892	30,400
Wabash County	R	−36.8%	1,590	3,478	5,134
Warren County	D	+5.4%	4,044	3,618	7,818
Washington County	R	−31.5%	2,450	4,792	7,435
Wayne County	R	−58.1%	1,514	5,988	7,697
White County	R	−35.9%	2,188	4,731	7,082
Whiteside County	D	+17.0%	14,833	10,448	25,828
Will County	D	+5.5%	144,229	128,969	278,165
Williamson County	R	−24.8%	10,647	17,909	29,254
Winnebago County	D	+5.5%	61,732	55,138	119,397
Woodford County	R	−39.0%	5,572	12,961	18,938