Illinois — 1980 U.S. Senate election
Recent presidential results
Akashicstate1980 Senate electionIllinois · U.S. SenateDixonD+13.5
How it voted
Share of the 1980 vote
| Alan J. Dixon ✓Democrat | 56.0% | 2,565,302 |
|---|---|---|
| David C. O'NealRepublican | 42.5% | 1,946,296 |
| Bruce GreenLibertarian | 0.6% | 29,328 |
1980Senate margin
D+60R+60
102 counties, each filled by 1980 D-vs-R margin. Hover any county for its result.
County-level results (102 counties) — table
| County | Winner | Margin |
|---|---|---|
| ADAMS, IL | Democratic | D+12.4 |
| ALEXANDER, IL | Democratic | D+23.1 |
| BOND, IL | Republican | R+3.5 |
| BOONE, IL | Republican | R+15.1 |
| BROWN, IL | Democratic | D+15.8 |
| BUREAU, IL | Republican | R+2.0 |
| CALHOUN, IL | Democratic | D+15.9 |
| CARROLL, IL | Republican | R+10.2 |
| CASS, IL | Democratic | D+7.2 |
| CHAMPAIGN, IL | Democratic | D+1.8 |
| CHRISTIAN, IL | Democratic | D+4.8 |
| CLARK, IL | Democratic | D+1.6 |
| CLAY, IL | Republican | R+0.8 |
| CLINTON, IL | Republican | R+9.3 |
| COLES, IL | Republican | R+4.8 |
| COOK, IL | Democratic | D+32.0 |
| CRAWFORD, IL | Democratic | D+2.6 |
| CUMBERLAND, IL | Democratic | D+2.8 |
| DE WITT, IL | Republican | R+18.1 |
| DEKALB, IL | Republican | R+1.4 |
| DOUGLAS, IL | Republican | R+14.1 |
| DU PAGE, IL | Republican | R+14.6 |
| EDGAR, IL | Republican | R+4.8 |
| EDWARDS, IL | Republican | R+16.1 |
| EFFINGHAM, IL | Republican | R+5.1 |
| FAYETTE, IL | Republican | R+9.0 |
| FORD, IL | Republican | R+28.1 |
| FRANKLIN, IL | Democratic | D+25.8 |
| FULTON, IL | Democratic | D+0.4 |
| GALLATIN, IL | Democratic | D+22.9 |
| GREENE, IL | Democratic | D+12.4 |
| GRUNDY, IL | Republican | R+7.9 |
| HAMILTON, IL | Democratic | D+3.5 |
| HANCOCK, IL | Republican | R+0.3 |
| HARDIN, IL | Democratic | D+10.7 |
| HENDERSON, IL | Democratic | D+0.6 |
| HENRY, IL | Republican | R+2.8 |
| IROQUOIS, IL | Republican | R+22.0 |
| JACKSON, IL | Democratic | D+19.7 |
| JASPER, IL | Democratic | D+9.4 |
| JEFFERSON, IL | Democratic | D+5.6 |
| JERSEY, IL | Democratic | D+8.3 |
| JO DAVIESS, IL | Republican | R+0.1 |
| JOHNSON, IL | Republican | R+8.9 |
| KANE, IL | Republican | R+8.7 |
| KANKAKEE, IL | Republican | R+1.9 |
| KENDALL, IL | Republican | R+23.7 |
| KNOX, IL | Republican | R+4.0 |
| LA SALLE, IL | Democratic | D+4.3 |
| LAKE, IL | Republican | R+3.6 |
| LAWRENCE, IL | Democratic | D+8.1 |
| LEE, IL | Republican | R+23.0 |
| LIVINGSTON, IL | Republican | R+19.6 |
| LOGAN, IL | Republican | R+17.6 |
| MACON, IL | Democratic | D+8.8 |
| MACOUPIN, IL | Democratic | D+11.2 |
| MADISON, IL | Democratic | D+14.5 |
| MARION, IL | Democratic | D+3.1 |
| MARSHALL, IL | Republican | R+17.1 |
| MASON, IL | Republican | R+3.2 |
| MASSAC, IL | Democratic | D+5.9 |
| MCDONOUGH, IL | Republican | R+5.7 |
| MCHENRY, IL | Republican | R+18.1 |
| MCLEAN, IL | Republican | R+10.5 |
| MENARD, IL | Republican | R+15.8 |
| MERCER, IL | Democratic | D+0.9 |
| MONROE, IL | Republican | R+7.3 |
| MONTGOMERY, IL | Democratic | D+2.4 |
| MORGAN, IL | Democratic | D+10.3 |
| MOULTRIE, IL | Republican | R+2.0 |
| OGLE, IL | Republican | R+20.6 |
| PEORIA, IL | Democratic | D+0.4 |
| PERRY, IL | Democratic | D+6.6 |
| PIATT, IL | Republican | R+8.8 |
| PIKE, IL | Democratic | D+19.7 |
| POPE, IL | Republican | R+1.8 |
| PULASKI, IL | Democratic | D+12.5 |
| PUTNAM, IL | Democratic | D+0.3 |
| RANDOLPH, IL | Democratic | D+5.0 |
| RICHLAND, IL | Republican | R+0.7 |
| ROCK ISLAND, IL | Democratic | D+15.6 |
| SALINE, IL | Democratic | D+16.0 |
| SANGAMON, IL | Democratic | D+2.3 |
| SCHUYLER, IL | Democratic | D+0.9 |
| SCOTT, IL | Democratic | D+6.4 |
| SHELBY, IL | Republican | R+3.1 |
| ST. CLAIR, IL | Democratic | D+17.7 |
| STARK, IL | Republican | R+17.7 |
| STEPHENSON, IL | Republican | R+1.0 |
| TAZEWELL, IL | Republican | R+10.5 |
| UNION, IL | Democratic | D+21.2 |
| VERMILION, IL | Republican | R+2.6 |
| WABASH, IL | Democratic | D+4.8 |
| WARREN, IL | Republican | R+15.2 |
| WASHINGTON, IL | Republican | R+27.7 |
| WAYNE, IL | Republican | R+5.6 |
| WHITE, IL | Democratic | D+2.1 |
| WHITESIDE, IL | Republican | R+9.5 |
| WILL, IL | Democratic | D+4.0 |
| WILLIAMSON, IL | Democratic | D+7.1 |
| WINNEBAGO, IL | Democratic | D+2.2 |
| WOODFORD, IL | Republican | R+26.6 |
presidential baselinePresident 1980R+7.9Senate 1980D+13.5vs. baselineD+21.4
Illinois's 1980 Senate race ran 21.4 points more Democratic than the presidential race on the same ballot.
Illinois's Senate margins
Every comparable D–R contest in our store, 1978–2022
| Year | Margin (D minus R) |
|---|---|
| 1978 | −7.9% |
| 1980 | +13.5% |
| 1984 | +1.9% |
| 1986 | +31.4% |
| 1990 | +30.1% |
| 1992 | +10.2% |
| 1996 | +15.4% |
| 1998 | −2.9% |
| 2002 | +22.3% |
| 2004 | +42.9% |
| 2008 | +39.3% |
| 2010 | −1.6% |
| 2014 | +10.9% |
| 2016 | +15.1% |
| 2020 | +16.1% |
| 2022 | +15.3% |
Same ballot, 1980IL
Source. MIT Election Data + Science Lab — 1980 US Senate returns, party-classified by literal ballot party · county returns aggregated from precinct-level results. Real returns — nothing estimated.