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The States · 2026 outlook

Illinois

One state, every federal race and the provisional balance of power in its capitol.

2024 presidentD+11.0
SenateD+12.2
U.S. HouseD 14R 3
GovernorD+4.2
County by county · U.S. Senateprojected margin
County view
Projected margin
R+40R+20EvenD+20D+40
Striped = seat changes partyProjected county outcome

Counties colored by the projected margin — the 2024 result shifted by the state's projected swing, summing exactly to the forecast above. Hover a county for its numbers.

County numbers

Cook1,034,319 (69.4%)398,405 (26.8%)D+42.71,489,318
DuPage180,469 (55.4%)132,755 (40.8%)D+14.7325,597
Will117,251 (49.8%)109,117 (46.4%)D+3.5235,310
Lake131,999 (58.9%)83,469 (37.3%)D+21.7223,979
Kane86,150 (53.5%)68,745 (42.7%)D+10.8161,013
McHenry54,112 (46.2%)58,524 (50.0%)R+3.8117,085
Madison40,459 (42.1%)51,906 (54.1%)R+11.996,014
Winnebago42,974 (49.0%)41,345 (47.2%)D+1.987,650
St. Clair45,518 (52.5%)37,832 (43.7%)D+8.986,642
Sangamon33,093 (46.2%)35,760 (50.0%)R+3.771,573
Champaign38,733 (60.4%)23,002 (35.8%)D+24.564,174
McLean31,838 (51.0%)28,185 (45.2%)D+5.962,394
Peoria29,084 (51.0%)25,759 (45.2%)D+5.857,009
Tazewell17,506 (35.6%)29,838 (60.6%)R+25.149,214
Kendall23,712 (49.6%)22,242 (46.6%)D+3.147,769
Rock Island24,497 (53.5%)19,573 (42.7%)D+10.745,811
LaSalle15,130 (39.9%)21,393 (56.3%)R+16.537,966
Kankakee13,304 (38.7%)19,794 (57.5%)R+18.934,405
DeKalb17,027 (49.8%)15,842 (46.4%)D+3.534,167
Macon12,916 (39.4%)18,586 (56.8%)R+17.332,746
Williamson7,092 (29.7%)15,894 (66.5%)R+36.823,894
Adams5,824 (25.3%)16,289 (70.9%)R+45.522,986
Vermilion6,679 (31.3%)13,876 (64.9%)R+33.721,367
Grundy6,597 (34.3%)11,890 (61.9%)R+27.519,217
Whiteside7,998 (41.8%)10,412 (54.4%)R+12.619,137
Ogle6,413 (34.4%)11,523 (61.8%)R+27.418,645
Henry6,672 (36.8%)10,785 (59.4%)R+22.718,147
Boone7,293 (41.6%)9,576 (54.6%)R+13.017,535
Macoupin4,989 (29.4%)11,313 (66.8%)R+37.316,946
Jackson8,141 (50.3%)7,415 (45.9%)D+4.516,170
Knox7,107 (44.3%)8,340 (51.9%)R+7.716,057
Coles5,403 (34.8%)9,552 (61.4%)R+26.715,546
Woodford4,286 (28.0%)10,421 (68.2%)R+40.115,288
Stephenson5,971 (39.3%)8,633 (56.9%)R+17.515,181
Monroe4,656 (30.8%)9,895 (65.4%)R+34.615,126
Clinton3,205 (23.0%)10,179 (73.2%)R+50.113,913
Effingham2,602 (18.9%)10,676 (77.3%)R+58.513,803
Franklin3,068 (24.0%)9,251 (72.2%)R+48.312,806
Marion2,967 (24.5%)8,705 (71.7%)R+47.312,133
Jefferson3,049 (25.3%)8,541 (70.9%)R+45.612,048
Livingston3,106 (25.9%)8,414 (70.3%)R+44.311,975
Fulton4,336 (37.1%)6,905 (59.1%)R+22.011,685
Lee4,410 (37.9%)6,798 (58.3%)R+20.511,651
Bureau4,267 (36.8%)6,873 (59.4%)R+22.511,580
Christian2,899 (25.8%)7,922 (70.4%)R+44.711,248
Morgan3,473 (32.7%)6,731 (63.5%)R+30.710,607
Randolph2,488 (24.0%)7,496 (72.2%)R+48.310,378
Iroquois1,967 (20.4%)7,303 (75.8%)R+55.49,636
Montgomery2,586 (27.1%)6,600 (69.1%)R+42.09,549
Logan2,563 (28.2%)6,183 (68.0%)R+39.89,091
Jo Daviess3,623 (40.4%)5,004 (55.8%)R+15.48,968
McDonough3,416 (39.5%)4,901 (56.7%)R+17.28,646
Jersey2,030 (24.0%)6,113 (72.2%)R+48.28,465
Shelby1,616 (19.1%)6,509 (77.1%)R+57.98,446
Saline1,888 (24.6%)5,497 (71.6%)R+47.07,677
Fayette1,174 (16.9%)5,514 (79.3%)R+62.46,952
Piatt2,311 (33.6%)4,304 (62.6%)R+29.06,876
Perry1,561 (23.3%)4,876 (72.9%)R+49.56,691
Hancock1,575 (24.0%)4,735 (72.2%)R+48.26,559
Crawford1,474 (22.8%)4,744 (73.4%)R+50.66,464
Douglas1,582 (26.0%)4,272 (70.2%)R+44.26,085
Mercer2,140 (35.4%)3,673 (60.8%)R+25.46,043
Wayne821 (13.7%)4,938 (82.5%)R+68.85,986
Union1,644 (27.6%)4,085 (68.6%)R+41.05,955
Clark1,387 (23.4%)4,327 (72.8%)R+49.55,940
Bond1,541 (26.7%)4,018 (69.5%)R+42.95,779
Edgar1,305 (22.8%)4,202 (73.4%)R+50.65,725
Carroll1,881 (33.2%)3,577 (63.0%)R+29.95,674
Richland1,252 (22.3%)4,142 (73.9%)R+51.55,607
De Witt1,488 (26.6%)3,901 (69.6%)R+43.15,602
Washington1,120 (20.5%)4,147 (75.7%)R+55.35,475
Pike940 (17.3%)4,288 (78.9%)R+61.65,435
Warren1,968 (36.6%)3,209 (59.6%)R+23.15,381
White998 (19.5%)3,923 (76.7%)R+57.25,115
Clay758 (15.5%)3,955 (80.7%)R+65.34,899
Massac1,200 (24.8%)3,450 (71.4%)R+46.64,834
Ford1,184 (25.0%)3,377 (71.2%)R+46.24,741
Moultrie1,157 (24.5%)3,387 (71.7%)R+47.24,723
Menard1,319 (28.4%)3,155 (67.8%)R+39.54,651
Mason1,287 (27.9%)3,151 (68.3%)R+40.44,613
Marshall1,376 (31.0%)2,892 (65.2%)R+34.24,437
Johnson885 (20.0%)3,366 (76.2%)R+56.14,419
Lawrence927 (21.0%)3,324 (75.2%)R+54.24,419
Greene885 (20.2%)3,332 (76.0%)R+55.84,384
Cumberland763 (18.3%)3,255 (77.9%)R+59.64,177
Jasper655 (16.7%)3,121 (79.5%)R+62.83,925
Wabash861 (22.1%)2,884 (74.1%)R+52.03,893
Cass1,047 (27.6%)2,604 (68.6%)R+41.03,795
Hamilton533 (17.6%)2,379 (78.6%)R+61.03,027
Schuyler698 (25.7%)1,919 (70.6%)R+44.92,720
Henderson748 (29.8%)1,664 (66.4%)R+36.52,507
Putnam907 (37.6%)1,413 (58.6%)R+21.02,412
Edwards326 (13.7%)1,965 (82.5%)R+68.82,381
Stark527 (26.4%)1,396 (69.8%)R+43.51,999
Calhoun413 (21.3%)1,454 (74.9%)R+53.71,941
Scott353 (18.8%)1,449 (77.4%)R+58.51,873
Gallatin405 (22.1%)1,356 (74.1%)R+51.91,831
Brown338 (19.0%)1,372 (77.2%)R+58.21,778
Pulaski552 (32.1%)1,104 (64.1%)R+32.01,721
Alexander650 (39.5%)932 (56.7%)R+17.11,644
Pope297 (19.2%)1,188 (76.9%)R+57.81,544
Hardin258 (18.5%)1,083 (77.7%)R+59.11,394

Model benchmark — the 2024 result shifted by the state's projected swing, summing exactly to the forecast.

State government2026 outlook

Trifecta nowDemocratic trifecta

ChamberNowProjected
SenateDD
HouseDD
State legislative outlook · modeledBoth chambers carry the Call the Map state legislature forecast — the same model the Chamber Board publishes.
Governor control: NCSL · 2026 State & Legislative Partisan Composition · Jan. 27, 2026Open the full Chamber Board →
The closest races in Illinoisby forecast margin