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1984 U.S. Senate election results

Results of all 33 Senate races in 1984 (seats won: Republican 17, Democratic 16); 4 changed party. Winners, margins and every candidate.

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  • Republican 17
  • Democratic 16
Alabama: Howell Heflin DEM +26.4Alaska: Ted Stevens REP +42.7ArizonaArkansas: David Hampton Pryor DEM +14.7CaliforniaColorado: William L. Armstrong REP +29.6ConnecticutDelaware: Joe Biden DEM +20.2District of ColumbiaFloridaGeorgia: Sam Nunn DEM +59.9HawaiiIdaho: James A. McClure REP +46.2Illinois: Paul M. Simon DEM +1.9 gainIndianaIowa: Tom Harkin DEM +11.8 gainKansas: Nancy Kassebaum REP +54.8Kentucky: Mitch McConnell REP +0.4 gainLouisiana: Bennett Johnston DEM +76.9Maine: William S. Cohen REP +47.5MarylandMassachusetts: John Kerry DEM +10.1Michigan: Carl Levin DEM +4.6Minnesota: Rudy Boschwitz REP +16.8Mississippi: Thad Cochran REP +21.9MissouriMontana: Max Baucus DEM +16.2Nebraska: J. James Exon DEM +3.9NevadaNew Hampshire: Gordon Humphrey REP +17.8New Jersey: Bill Bradley DEM +29.3New Mexico: Pete V. Domenici REP +43.8New YorkNorth Carolina: Jesse Helms REP +3.9North DakotaOhioOklahoma: David Boren DEM +52.2Oregon: Mark Odom Hatfield REP +33.1PennsylvaniaRhode Island: Claiborne Pell DEM +45.3South Carolina: Strom Thurmond REP +35.0South Dakota: Larry Pressler REP +49.0Tennessee: Al Gore DEM +26.9 gainTexas: Phil Gramm REP +17.1UtahVermontVirginia: John W. Warner REP +40.1WashingtonWest Virginia: John D. Rockefeller, IV DEM +4.1WisconsinWyoming: Alan Kooi Simpson REP +56.6VermontNew Hampshire: Gordon Humphrey REP +17.8Massachusetts: John Kerry DEM +10.1Rhode Island: Claiborne Pell DEM +45.3ConnecticutNew Jersey: Bill Bradley DEM +29.3Delaware: Joe Biden DEM +20.2MarylandDistrict of Columbia
States with a race in 1984, coloured by the winning party and shaded by margin. Grey: no race.

Seats that changed party

All races

StateSeatWinnerPartyMarginBefore
Alabama Class II Howell Heflin Democratic 26.4 Democratic
Alaska Class II Ted Stevens Republican 42.7 Republican
Arkansas Class II David Hampton Pryor Democratic 14.7 Democratic
Colorado Class II William L. Armstrong Republican 29.6 Republican
Delaware Class II Joe Biden Democratic 20.2 Democratic
Georgia Class II Sam Nunn Democratic 59.9 Democratic
Idaho Class II James A. McClure Republican 46.2 Republican
Illinois Class II Paul M. Simon Democratic 1.9 Republican flip
Iowa Class II Tom Harkin Democratic 11.8 Republican flip
Kansas Class II Nancy Kassebaum Republican 54.8 Republican
Kentucky Class II Mitch McConnell Republican 0.4 Democratic flip
Louisiana Class II Bennett Johnston Democratic 76.9 Democratic
Maine Class II William S. Cohen Republican 47.5 Republican
Massachusetts Class II John Kerry Democratic 10.1 Democratic
Michigan Class II Carl Levin Democratic 4.6 Democratic
Minnesota Class II Rudy Boschwitz Republican 16.8 Republican
Mississippi Class II Thad Cochran Republican 21.9 Republican
Montana Class II Max Baucus Democratic 16.2 Democratic
Nebraska Class II J. James Exon Democratic 3.9 Democratic
New Hampshire Class II Gordon Humphrey Republican 17.8 Republican
New Jersey Class II Bill Bradley Democratic 29.3 Democratic
New Mexico Class II Pete V. Domenici Republican 43.8 Republican
North Carolina Class II Jesse Helms Republican 3.9 Republican
Oklahoma Class II David Boren Democratic 52.2 Democratic
Oregon Class II Mark Odom Hatfield Republican 33.1 Republican
Rhode Island Class II Claiborne Pell Democratic 45.3 Democratic
South Carolina Class II Strom Thurmond Republican 35.0 Republican
South Dakota Class II Larry Pressler Republican 49.0 Republican
Tennessee Class II Al Gore Democratic 26.9 Republican flip
Texas Class II Phil Gramm Republican 17.1 Republican
Virginia Class II John W. Warner Republican 40.1 Republican
West Virginia Class II John D. Rockefeller, IV Democratic 4.1 Democratic
Wyoming Class II Alan Kooi Simpson Republican 56.6 Republican

Source: FiveThirtyEight election-results; each race page links the official source it was compiled from.