Illinois — 2020 U.S. Senate election

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state2020 Senate electionIllinois · U.S. SenateDurbinD+16.1

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How it voted

Share of the 2020 vote

Richard J. Durbin (i) ✓Democrat	54.9%	3,278,930
Mark C. Curran Jr.Republican	38.9%	2,319,870
Willie L. WilsonWillie Wilson Party	4.0%	237,699

2020Senate margin

D+60

D+30TieR+30

R+60

102 counties, each filled by 2020 D-vs-R margin. Hover any county for its result.

County-level results (102 counties) — table

2020 Senate result by county for Illinois — 2020 US Senate election — winner and D-vs-R margin.

County	Winner	Margin
ADAMS, IL	Republican	R+44.5
ALEXANDER, IL	Republican	R+2.6
BOND, IL	Republican	R+29.1
BOONE, IL	Republican	R+14.1
BROWN, IL	Republican	R+46.3
BUREAU, IL	Republican	R+14.0
CALHOUN, IL	Republican	R+28.5
CARROLL, IL	Republican	R+25.3
CASS, IL	Republican	R+26.7
CHAMPAIGN, IL	Democratic	D+21.0
CHRISTIAN, IL	Republican	R+35.3
CLARK, IL	Republican	R+46.8
CLAY, IL	Republican	R+59.1
CLINTON, IL	Republican	R+41.2
COLES, IL	Republican	R+23.5
COOK, IL	Democratic	D+47.0
CRAWFORD, IL	Republican	R+46.2
CUMBERLAND, IL	Republican	R+50.1
DE WITT, IL	Republican	R+34.0
DEKALB, IL	Democratic	D+4.7
DOUGLAS, IL	Republican	R+39.1
DUPAGE, IL	Democratic	D+14.1
EDGAR, IL	Republican	R+41.2
EDWARDS, IL	Republican	R+64.2
EFFINGHAM, IL	Republican	R+53.9
FAYETTE, IL	Republican	R+55.1
FORD, IL	Republican	R+45.2
FRANKLIN, IL	Republican	R+34.4
FULTON, IL	Republican	R+10.3
GALLATIN, IL	Republican	R+32.0
GREENE, IL	Republican	R+40.8
GRUNDY, IL	Republican	R+19.9
HAMILTON, IL	Republican	R+43.7
HANCOCK, IL	Republican	R+43.0
HARDIN, IL	Republican	R+40.5
HENDERSON, IL	Republican	R+24.6
HENRY, IL	Republican	R+18.0
IROQUOIS, IL	Republican	R+51.8
JACKSON, IL	Democratic	D+4.7
JASPER, IL	Republican	R+54.6
JEFFERSON, IL	Republican	R+37.1
JERSEY, IL	Republican	R+37.5
JO DAVIESS, IL	Republican	R+14.6
JOHNSON, IL	Republican	R+48.4
KANE, IL	Democratic	D+11.5
KANKAKEE, IL	Republican	R+13.7
KENDALL, IL	Democratic	D+3.6
KNOX, IL	Republican	R+2.3
LAKE, IL	Democratic	D+16.9
LASALLE, IL	Republican	R+8.7
LAWRENCE, IL	Republican	R+46.9
LEE, IL	Republican	R+16.9
LIVINGSTON, IL	Republican	R+37.1
LOGAN, IL	Republican	R+30.3
MACON, IL	Republican	R+14.2
MACOUPIN, IL	Republican	R+26.3
MADISON, IL	Republican	R+9.2
MARION, IL	Republican	R+38.2
MARSHALL, IL	Republican	R+31.2
MASON, IL	Republican	R+25.3
MASSAC, IL	Republican	R+42.5
MCDONOUGH, IL	Republican	R+13.0
MCHENRY, IL	Republican	R+4.1
MCLEAN, IL	Democratic	D+0.6
MENARD, IL	Republican	R+36.7
MERCER, IL	Republican	R+18.8
MONROE, IL	Republican	R+33.7
MONTGOMERY, IL	Republican	R+33.1
MORGAN, IL	Republican	R+24.2
MOULTRIE, IL	Republican	R+42.5
OGLE, IL	Republican	R+23.1
PEORIA, IL	Democratic	D+6.6
PERRY, IL	Republican	R+31.8
PIATT, IL	Republican	R+26.6
PIKE, IL	Republican	R+50.5
POPE, IL	Republican	R+49.5
PULASKI, IL	Republican	R+15.5
PUTNAM, IL	Republican	R+7.5
RANDOLPH, IL	Republican	R+34.7
RICHLAND, IL	Republican	R+48.6
ROCK ISLAND, IL	Democratic	D+13.3
SALINE, IL	Republican	R+37.3
SANGAMON, IL	Republican	R+3.5
SCHUYLER, IL	Republican	R+30.3
SCOTT, IL	Republican	R+45.7
SHELBY, IL	Republican	R+48.4
ST CLAIR, IL	Democratic	D+8.6
STARK, IL	Republican	R+37.2
STEPHENSON, IL	Republican	R+13.4
TAZEWELL, IL	Republican	R+22.0
UNION, IL	Republican	R+26.9
VERMILION, IL	Republican	R+23.5
WABASH, IL	Republican	R+51.1
WARREN, IL	Republican	R+19.3
WASHINGTON, IL	Republican	R+48.4
WAYNE, IL	Republican	R+63.9
WHITE, IL	Republican	R+51.1
WHITESIDE, IL	Republican	R+3.7
WILL, IL	Democratic	D+8.9
WILLIAMSON, IL	Republican	R+27.8
WINNEBAGO, IL	Democratic	D+0.6
WOODFORD, IL	Republican	R+37.4

Source. MIT Election Data + Science Lab — 2020 US Senate returns, party-classified by literal ballot party · county returns aggregated from precinct-level results. Real returns — nothing estimated.