# 1984 United States Senate elections

The 1984 United States Senate elections were held on November 6, with the 33 seats of Class 2 contested in regular elections. They coincided with the landslide re-election of President Ronald Reagan in the presidential election. In spite of the lopsided presidential race, Reagan's Republican Party suffered a net loss of two Senate seats to the Democrats, although it retained control of the Senate with a reduced 53–47 majority.
Democrats defeated incumbents in Illinois and Iowa, and won an open seat in Tennessee, while Republicans defeated an incumbent in Kentucky. This was the first time since 1972 that Democrats gained Class 2 Senate seats.

## Results summary

| 47 | 53 |
| Democratic | Republican |
| Parties | Parties | | | | | Total |
| Parties | Parties | Democratic | Republican | Libertarian | Other | Total |
| Last elections (1982) | Last elections (1982) | 46 | 54 | 0 | 0 | 100 |
| Before these elections | Before these elections | 45 | 55 | 0 | 0 | 100 |
| Not up | Not up | 31 | 36 | — | — | 67 |
| Up Class 2 (1978→1984) | Up Class 2 (1978→1984) | 14 | 19 | — | — | 33 |
| Incumbent retired | Incumbent retired | 2 | 2 | — | — | 4 |
| | Held by same party | 2 | 1 | — | — | 3 |
| | Replaced by other party | 1 Republican replaced by 1 Democrat | 1 Republican replaced by 1 Democrat | — | — | 1 |
| | Result | 3 | 1 | — | — | 4 |
| Incumbent ran | Incumbent ran | 12 | 17 | — | — | 29 |
| | Won re-election | 11 | 15 | — | — | 26 |
| | Lost re-election | 2 Republicans replaced by 2 Democrats 1 Democrat replaced by 1 Republican | 2 Republicans replaced by 2 Democrats 1 Democrat replaced by 1 Republican | — | — | 3 |
| | Lost renomination, but held by same party | 0 | 0 | — | — | 0 |
| | Result | 13 | 16 | — | — | 29 |
| Total elected | Total elected | 16 | 17 | 0 | 0 | 33 |
| Net gain/loss | Net gain/loss | 2 | 2 | | | 2 |
| Nationwide vote | Nationwide vote | 23,079,278 | 22,850,493 | 160,798 | 232,231 | 46,322,800 |
| | Share | 49.82% | 49.33% | 0.35% | 0.50% | 100% |
| Result | Result | 47 | 53 | 0 | 0 | 100 |
Source: Office of the Clerk

## Gains, losses, and holds
### Retirements

Two Republicans and two Democrats retired instead of seeking re-election.
| State | Senator | Replaced by |
| Massachusetts | Paul Tsongas | John Kerry |
| Tennessee | Howard Baker | Al Gore |
| Texas | John Tower | Phil Gramm |
| West Virginia | Jennings Randolph | Jay Rockefeller |

### Defeats

Two Republicans and one Democrat sought re-election but lost in the general election.
| State | Senator | Replaced by |
| Illinois | Charles H. Percy | Paul Simon |
| Iowa | Roger Jepsen | Tom Harkin |
| Kentucky | Walter Dee Huddleston | Mitch McConnell |

### Post-election changes

| State | Senator | Replaced by |
| North Carolina | John Porter East | Jim Broyhill |

## Change in composition
### Before the elections

| D$_1$ | D$_2$ | D$_3$ | D$_4$ | D$_5$ | D$_6$ | D$_7$ | D$_8$ | D$_9$ | D$_{10}$ |
| D$_{20}$ | D$_{19}$ | D$_{18}$ | D$_{17}$ | D$_{16}$ | D$_{15}$ | D$_{14}$ | D$_{13}$ | D$_{12}$ | D$_{11}$ |
| D$_{21}$ | D$_{22}$ | D$_{23}$ | D$_{24}$ | D$_{25}$ | D$_{26}$ | D$_{27}$ | D$_{28}$ | D$_{29}$ | D$_{30}$ |
| D$_{40}$ Mont. Ran | D$_{39}$ Mich. Ran | D$_{38}$ Mass. Retired | D$_{37}$ La. Ran | D$_{36}$ Ky. Ran | D$_{35}$ Ga. Ran | D$_{34}$ Del. Ran | D$_{33}$ Ark. Ran | D$_{32}$ Ala. Ran | D$_{31}$ |
| D$_{41}$ Neb. Ran | D$_{42}$ N.J. Ran | D$_{43}$ Okla. Ran | D$_{44}$ R.I. Ran | D$_{45}$ W.Va. Retired | R$_{55}$ Wyo. Ran | R$_{54}$ Va. Ran | R$_{53}$ Texas Retired | R$_{52}$ Tenn. Retired | R$_{51}$ S.Dak. Ran |
| R$_{51}$ S.Dak. Ran |||||||||
| R$_{41}$ Iowa Ran | R$_{42}$ Kan. Ran | R$_{43}$ Me. Ran | R$_{44}$ Minn. Ran | R$_{45}$ Miss. Ran | R$_{46}$ N.H. Ran | R$_{47}$ N.M. Ran | R$_{48}$ N.C. Ran | R$_{49}$ Ore. Ran | R$_{50}$ S.C. Ran |
| R$_{40}$ Ill. Ran | R$_{39}$ Idaho Ran | R$_{38}$ Colo. Ran | R$_{37}$ Alaska Ran | R$_{36}$ | R$_{35}$ | R$_{34}$ | R$_{33}$ | R$_{32}$ | R$_{31}$ |
| R$_{21}$ | R$_{22}$ | R$_{23}$ | R$_{24}$ | R$_{25}$ | R$_{26}$ | R$_{27}$ | R$_{28}$ | R$_{29}$ | R$_{30}$ |
| R$_{20}$ | R$_{19}$ | R$_{18}$ | R$_{17}$ | R$_{16}$ | R$_{15}$ | R$_{14}$ | R$_{13}$ | R$_{12}$ | R$_{11}$ |
| R$_1$ | R$_2$ | R$_3$ | R$_4$ | R$_5$ | R$_6$ | R$_7$ | R$_8$ | R$_9$ | R$_{10}$ |

### After the elections

| D$_1$ | D$_2$ | D$_3$ | D$_4$ | D$_5$ | D$_6$ | D$_7$ | D$_8$ | D$_9$ | D$_{10}$ |
| D$_{20}$ | D$_{19}$ | D$_{18}$ | D$_{17}$ | D$_{16}$ | D$_{15}$ | D$_{14}$ | D$_{13}$ | D$_{12}$ | D$_{11}$ |
| D$_{21}$ | D$_{22}$ | D$_{23}$ | D$_{24}$ | D$_{25}$ | D$_{26}$ | D$_{27}$ | D$_{28}$ | D$_{29}$ | D$_{30}$ |
| D$_{40}$ Neb. Re-elected | D$_{39}$ Mont. Re-elected | D$_{38}$ Mich. Re-elected | D$_{37}$ Mass. Hold | D$_{36}$ La. Re-elected | D$_{35}$ Ga. Re-elected | D$_{34}$ Del. Re-elected | D$_{33}$ Ark. Re-elected | D$_{32}$ Ala. Re-elected | D$_{31}$ |
| D$_{41}$ N.J. Re-elected | D$_{42}$ Okla. Re-elected | D$_{43}$ R.I. Re-elected | D$_{44}$ W.Va. Hold | D$_{45}$ Ill. Gain | D$_{46}$ Iowa Gain | D$_{47}$ Tenn. Gain | R$_{53}$ Ky. Gain | R$_{52}$ Wyo. Re-elected | R$_{51}$ Va. Re-elected |
| R$_{51}$ Va. Re-elected |||||||||
| R$_{41}$ Me. Re-elected | R$_{42}$ Minn. Re-elected | R$_{43}$ Miss. Re-elected | R$_{44}$ N.H. Re-elected | R$_{45}$ N.M. Re-elected | R$_{46}$ N.C. Re-elected | R$_{47}$ Ore. Re-elected | R$_{48}$ S.C. Re-elected | R$_{49}$ S.Dak. Re-elected | R$_{50}$ Texas Hold |
| R$_{40}$ Kan. Re-elected | R$_{39}$ Idaho Re-elected | R$_{38}$ Colo. Re-elected | R$_{37}$ Alaska Re-elected | R$_{36}$ | R$_{35}$ | R$_{34}$ | R$_{33}$ | R$_{32}$ | R$_{31}$ |
| R$_{21}$ | R$_{22}$ | R$_{23}$ | R$_{24}$ | R$_{25}$ | R$_{26}$ | R$_{27}$ | R$_{28}$ | R$_{29}$ | R$_{30}$ |
| R$_{20}$ | R$_{19}$ | R$_{18}$ | R$_{17}$ | R$_{16}$ | R$_{15}$ | R$_{14}$ | R$_{13}$ | R$_{12}$ | R$_{11}$ |
| R$_1$ | R$_2$ | R$_3$ | R$_4$ | R$_5$ | R$_6$ | R$_7$ | R$_8$ | R$_9$ | R$_{10}$ |
| Key | D$_#$ Democratic R$_#$ Republican |

## Race summary
### Special elections

There were no special elections to the U.S. Senate in 1984.

### Elections leading to the next Congress

In these general elections, the winners were elected for the term beginning January 3, 1985; ordered by state.
All of the elections involved the Class 2 seats.
| State | Incumbent | Incumbent | Incumbent | Result | Candidates |
| State | Senator | Party | Electoral history | Result | Candidates |
| Alabama | Howell Heflin | Democratic | 1978 | Incumbent re-elected. | ▌Y Howell Heflin (Democratic) 62.7% ▌Albert L. Smith Jr. (Republican) 36.4% ▌Yana Davis (Libertarian) 0.9% |
| Alaska | Ted Stevens | Republican | 1968 (appointed) 1970 1972 1978 | Incumbent re-elected. | ▌Y Ted Stevens (Republican) 71.2% ▌John E. Havelock (Democratic) 28.5% |
| Arkansas | David Pryor | Democratic | 1978 | Incumbent re-elected. | ▌Y David Pryor (Democratic) 57.3% ▌Ed Bethune (Republican) 42.7% |
| Colorado | William L. Armstrong | Republican | 1978 | Incumbent re-elected. | ▌Y William L. Armstrong (Republican) 64.2% ▌Nancy E. Dick (Democratic) 34.6% Others ▌Craig Green (Libertarian) 0.9% ▌David Martin (Socialist Workers) 0.2% ▌Earl Higgerson (Prohibition) 0.1% |
| Delaware | Joe Biden | Democratic | 1972 1978 | Incumbent re-elected. | ▌Y Joe Biden (Democratic) 60.1% ▌John M. Burris (Republican) 39.1% |
| Georgia | Sam Nunn | Democratic | 1972 (special) 1972 1978 | Incumbent re-elected. | ▌Y Sam Nunn (Democratic) 79.9% ▌Jon M. Hicks (Republican) 20.1% |
| Idaho | Jim McClure | Republican | 1972 1978 | Incumbent re-elected. | ▌Y Jim McClure (Republican) 72.2% ▌Peter M. Busch (Democratic) 26.0% ▌Donald Billings (Libertarian) 1.8% |
| Illinois | Charles H. Percy | Republican | 1966 1972 1978 | Incumbent lost re-election. Democratic gain. | ▌Y Paul Simon (Democratic) 50.1% ▌Charles H. Percy (Republican) 48.2% Others ▌Steven Givot (Libertarian) 1.2% ▌Marjorie Pries (Citizens) 0.2% ▌Nelson Gonzalez (Socialist Workers) 0.1% ▌Ishmael Flory (Communist) 0.1% |
| Iowa | Roger Jepsen | Republican | 1978 | Incumbent lost re-election. Democratic gain. | ▌Y Tom Harkin (Democratic) 55.5% ▌Roger Jepsen (Republican) 43.7% ▌Garry De Young (Independent) 0.8% |
| Kansas | Nancy Kassebaum | Republican | 1978 1978 (appointed) | Incumbent re-elected. | ▌Y Nancy Kassebaum (Republican) 76.0% ▌James R. Maher (Democratic) 21.2% Others ▌Lucille Bieger (Conservative) 0.9% ▌Marian Jackson (American) 0.7% ▌Douglas Merritt (Libertarian) 0.7% ▌Freda Steele (Prohibition) 0.5% |
| Kentucky | Walter Dee Huddleston | Democratic | 1972 1978 | Incumbent lost re-election. Republican gain. | ▌Y Mitch McConnell (Republican) 49.9% ▌Walter Dee Huddleston (Democratic) 49.5% ▌Dave Welters (Socialist Workers) 0.6% |
| Louisiana | J. Bennett Johnston | Democratic | 1972 (appointed) 1972 1978 | Incumbent re-elected. | ▌Y J. Bennett Johnston (Democratic) 85.7% ▌Robert Max Ross (Republican) 8.9% |
| Maine | William Cohen | Republican | 1978 | Incumbent re-elected. | ▌Y William Cohen (Republican) 73.3% ▌Libby Mitchell (Democratic) 25.9% ▌Ann Stoddard (Constitutionalist) 0.8% |
| Massachusetts | Paul Tsongas | Democratic | 1978 | Incumbent retired. Democratic hold. Incumbent resigned January 2, 1985 to give successor preferential seniority. Winner appointed the same day. | ▌Y John Kerry (Democratic) 55.1% ▌Ray Shamie (Republican) 44.9% |
| Michigan | Carl Levin | Democratic | 1978 | Incumbent re-elected. | ▌Y Carl Levin (Democratic) 51.8% ▌Jack R. Lousma (Republican) 47.2% |
| Minnesota | Rudy Boschwitz | Republican | 1978 1978 (appointed) | Incumbent re-elected. | ▌Y Rudy Boschwitz (Republican) 58.1% ▌Joan Growe (DFL) 41.3% |
| Mississippi | Thad Cochran | Republican | 1978 1978 (appointed) | Incumbent re-elected. | ▌Y Thad Cochran (Republican) 60.9% ▌William F. Winter (Democratic) 39.1% |
| Montana | Max Baucus | Democratic | 1978 1978 (appointed) | Incumbent re-elected. | ▌Y Max Baucus (Democratic) 56.9% ▌Chuck Cozzens (Republican) 40.7% ▌Neil Halprin (Libertarian) 2.4% |
| Nebraska | J. James Exon | Democratic | 1978 | Incumbent re-elected. | ▌Y J. James Exon (Democratic) 51.9% ▌Nancy Hoch (Republican) 48.0% |
| New Hampshire | Gordon J. Humphrey | Republican | 1978 | Incumbent re-elected. | ▌Y Gordon J. Humphrey (Republican) 58.7% ▌Norman D'Amours (Democratic) 41.0% ▌Saunder Primack (Libertarian) 0.3% |
| New Jersey | Bill Bradley | Democratic | 1978 | Incumbent re-elected. | ▌Y Bill Bradley (Democratic) 64.2% ▌Mary V. Mochary (Republican) 35.2% |
| New Mexico | Pete Domenici | Republican | 1972 1978 | Incumbent re-elected. | ▌Y Pete Domenici (Republican) 71.9% ▌Judith A. Pratt (Democratic) 28.1% |
| North Carolina | Jesse Helms | Republican | 1972 1978 | Incumbent re-elected. | ▌Y Jesse Helms (Republican) 51.7% ▌Jim Hunt (Democratic) 47.8% |
| Oklahoma | David Boren | Democratic | 1978 | Incumbent re-elected. | ▌Y David Boren (Democratic) 75.6% ▌Will E. Crozier (Republican) 23.4% ▌Robert Murphy (Libertarian) 0.9% |
| Oregon | Mark Hatfield | Republican | 1966 1972 1978 | Incumbent re-elected. | ▌Y Mark Hatfield (Republican) 66.5% ▌Margie Hendriksen (Democratic) 33.4% |
| Rhode Island | Claiborne Pell | Democratic | 1960 1966 1972 1978 | Incumbent re-elected. | ▌Y Claiborne Pell (Democratic) 72.6% ▌Barbara Leonard (Republican) 27.4% |
| South Carolina | Strom Thurmond | Republican | 1954 (write-in) 1954 (appointed) 1956 (Resigned) 1956 (special) 1960 1966 1972 1978 | Incumbent re-elected. | ▌Y Strom Thurmond (Republican) 66.8% ▌Melvin Purvis Jr. (Democratic) 31.8% |
| South Dakota | Larry Pressler | Republican | 1978 | Incumbent re-elected. | ▌Y Larry Pressler (Republican) 74.5% ▌George V. Cunningham (Democratic) 25.5% |
| Tennessee | Howard Baker | Republican | 1966 1972 1978 | Incumbent retired. Democratic gain. | ▌Y Al Gore (Democratic) 60.7% ▌Victor Ashe (Republican) 33.8% ▌Ed McAteer (Independent) 5.3% |
| Texas | John Tower | Republican | 1961 (special) 1966 1972 1978 | Incumbent retired. Republican hold. | ▌Y Phil Gramm (Republican) 58.5% ▌Lloyd Doggett (Democratic) 41.4% |
| Virginia | John Warner | Republican | 1978 1979 (appointed) | Incumbent re-elected. | ▌Y John Warner (Republican) 70.0% ▌Edythe Harrison (Democratic) 29.9% |
| West Virginia | Jennings Randolph | Democratic | 1958 (special) 1960 1966 1972 1978 | Incumbent retired. Democratic hold. Winner seated January 15, 1985 to finish term as Governor of West Virginia. | ▌Y Jay Rockefeller (Democratic) 51.8% ▌John Raese (Republican) 47.7% ▌Mary Radin (Socialist Workers) 0.5% |
| Wyoming | Alan Simpson | Republican | 1978 1979 (appointed) | Incumbent re-elected. | ▌Y Alan Simpson (Republican) 78.3% ▌Victor A. Ryan (Democratic) 21.7% |

## Closest races

In six races the margin of victory was under 10%.
| State | Party of winner | Margin |
| Kentucky | Republican (flip) | 0.41% |
| Illinois | Democratic (flip) | 1.86% |
| West Virginia | Democratic | 3.09% |
| North Carolina | Republican | 3.85% |
| Nebraska | Democratic | 3.92% |
| Michigan | Democratic | 4.61% |
Minnesota was the tipping point state with a margin of victory of 16.8%.

## Alabama

The 1984 United States Senate election in Alabama was held on November 6, 1984. Incumbent Democratic Senator Howell Heflin was easily re-elected to a second term. Heflin received 94% of the black vote.

## Alaska

Incumbent Republican Ted Stevens sought re-election to a fourth term. Owing to his popularity and the conservative bent of Alaska, Stevens did not face major opposition, and easily defeated former Alaska Attorney General John Havelock in the general election.
Open primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Ted Stevens (incumbent) | 65,522 | 69.22% |
| | Democratic | John Havelock | 19,074 | 20.15% |
| | Democratic | Dave Carlson | 4,620 | 4.88% |
| | Republican | Michael Beasley | 2,443 | 2.58% |
| | Democratic | Joe Tracanna | 1,661 | 1.75% |
| | Democratic | Phil Stoddard | 1,331 | 1.41% |
| Total votes | Total votes | Total votes | 94,651 | 100.00% |
Alaska general election :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Ted Stevens (Incumbent) | 146,919 | 71.17% | −4.42% |
| | Democratic | John E. Havelock | 58,804 | 28.49% | +4.39% |
| | Write-ins | | 715 | 0.35% | |
| Majority | Majority | Majority | 88,115 | 42.68% | −8.81% |
| Turnout | Turnout | Turnout | 206,438 | | |
| | Republican hold | Republican hold | Swing | | |

## Arkansas

Incumbent Democrat David Pryor won re-election to a second term over Republican U.S. Representative Ed Bethune.
General election results :
| Party | Party | Candidate | Votes | % |
| | Democratic | David Pryor (Incumbent) | 502,341 | 57.35% |
| | Republican | Ed Bethune | 373,615 | 42.65% |
| Majority | Majority | Majority | 128,726 | 14.70% |
| Turnout | Turnout | Turnout | 875,956 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Colorado

Incumbent Republican William L. Armstrong won re-election to a second term over Democratic Lieutenant Governor of Colorado Nancy E. Dick.
1984 United States Senate election in Colorado :
| Party | Party | Candidate | Votes | % |
| | Republican | William L. Armstrong (Incumbent) | 833,821 | 64.25% |
| | Democratic | Nancy Dick | 449,327 | 34.62% |
| | Libertarian | Craig Green | 11,077 | 0.85% |
| | Socialist Workers | David Martin | 2,208 | 0.17% |
| | Prohibition | Earl Higgerson | 1,376 | 0.11% |
| Majority | Majority | Majority | 384,494 | 29.63% |
| Total votes | Total votes | Total votes | 1,297,809 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Delaware

Incumbent Democrat and future President of the United States Joe Biden won re-election to a third term, defeating Republican challenger John M. Burris, former Majority Leader of the Delaware House of Representatives.
General election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Joe Biden (Incumbent) | 147,831 | 60.11% | +2.15% |
| | Republican | John M. Burris | 98,101 | 39.89% | −1.13% |
| Majority | Majority | Majority | 49,730 | 20.22% | +3.28% |
| Turnout | Turnout | Turnout | 245,932 | | |
| | Democratic hold | Democratic hold | Swing | | |

## Georgia

Incumbent Democrat Sam Nunn won re-election to a third term over Republican educator, Mike Hicks
General election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Sam Nunn (Incumbent) | 1,344,104 | 79.94% | −3.19% |
| | Republican | Mike Hicks | 337,196 | 20.06% | +3.19% |
| Majority | Majority | Majority | 1,006,908 | 59.88% | −6.39% |
| Turnout | Turnout | Turnout | 1,681,300 | | |
| | Democratic hold | Democratic hold | Swing | | |

## Idaho

Incumbent Republican James A. McClure won re-election to a third term over Democratic Vietnam War veteran, Peter M. Busch.
1984 United States Senate election in Idaho :
| Party | Party | Candidate | Votes | % |
| | Republican | James A. McClure (Incumbent) | 293,193 | 72.19% |
| | Democratic | Peter M. Busch | 105,591 | 26.00% |
| | Libertarian | Donald B. Billings | 7,384 | 1.82% |
| Majority | Majority | Majority | 187,602 | 46.19% |
| Total votes | Total votes | Total votes | 406,168 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Illinois

Incumbent Republican Charles H. Percy ran for re-election to a fourth term in the United States Senate. Senator Percy was opposed by Democratic nominee Paul Simon, who was a United States Congressman from Illinois's 22nd congressional district. The campaign between Percy and Simon was brutal and toughly-fought, and ended up with Simon ousting Percy by fewer than 90,000 votes, which was, at the time, considered an upset.
The election was very close. Simon prevailed by only 89,126 votes, or 1.86%. Incumbent Percy did well all throughout the state, including the Chicago collar counties. However, Simon received huge numbers out of the heavily populated and Democratic Cook County, which encompasses most of the Chicago Metropolitan Area. Percy led early on and well into the night, but as Cook County began to count all of its votes, Simon pulled ahead. Simon won despite then-president Reagan winning the state easily. Percy called Simon at around 5 A.M. the next day and conceded. Percy also congratulated Simon on his hard-earned victory. Simon was sworn in on January 3, 1985, and served in the senate until January 3, 1997, when he retired. Simon was later succeeded by Dick Durbin, a close friend and fellow Democrat.
Illinois general election :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Paul Simon | 2,397,165 | 50.07% | +4.60% |
| | Republican | Charles H. Percy (Incumbent) | 2,308,039 | 48.21% | −5.13% |
| | Libertarian | Steve I. Givot | 59,777 | 1.25% | +0.74% |
| | Independent | Marjorie H. Pries | 12,366 | 0.26% | |
| | Socialist Workers | Nelson Gonzalez | 4,913 | 0.10% | −0.40% |
| | Communist | Ishmael Flory | 4,802 | 0.10% | |
| | Write-ins | | 273 | 0.01% | |
| Majority | Majority | Majority | 89,126 | 1.86% | −6.00% |
| Turnout | Turnout | Turnout | 4,787,335 | | |
| | Democratic gain from Republican | Democratic gain from Republican | Swing | | |

## Iowa

Incumbent Republican Roger Jepsen ran for re-election to a second term in the United States Senate. Jepsen was opposed by United States Congressman Tom Harkin, from Iowa's 5th congressional district, who won the Democratic primary uncontested. The general election was full of mudslinging and personal attacks, including the embellishment by both candidates of their military records; Harkin attacked Jepsen for failing to keep his promise to not sell AWACS aircraft to Saudi Arabia. Ultimately, Harkin defeated Jepsen by a wide margin, winning the first of five terms in the Senate.
Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Tom Harkin | 106,005 | 99.93% |
| | Democratic | Write-ins | 70 | 0.07% |
| Total votes | Total votes | Total votes | 106,075 | 100.00% |
Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Roger Jepsen (Incumbent) | 113,996 | 99.87% |
| | Republican | Write-ins | 147 | 0.13% |
| Total votes | Total votes | Total votes | 114,143 | 100.00% |
Iowa general election :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Tom Harkin | 716,883 | 55.46% | +7.54% |
| | Republican | Roger Jepsen (Incumbent) | 564,381 | 43.66% | −7.47% |
| | Independent | Garry De Young | 11,014 | 0.85% | |
| | Write-ins | | 422 | 0.03% | |
| Majority | Majority | Majority | 152,502 | 11.80% | +8.58% |
| Turnout | Turnout | Turnout | 1,292,700 | | |
| | Democratic gain from Republican | Democratic gain from Republican | Swing | | |

## Kansas

Incumbent Republican Nancy Kassebaum won re-election to a second term over Democrat James R. Maher, a financial consultant.
1984 United States Senate election in Kansas :
| Party | Party | Candidate | Votes | % |
| | Republican | Nancy Kassebaum (incumbent) | 757,402 | 75.99% |
| | Democratic | James R. Maher | 211,664 | 21.24% |
| | Conservative | Lucille Bieger | 9,380 | 0.94% |
| | American | Marian Ruck Jackson | 6,918 | 0.69% |
| | Libertarian | Douglas N. Merritt | 6,755 | 0.68% |
| | Prohibition | Freda H. Steele | 4,610 | 0.46% |
| Majority | Majority | Majority | 545,738 | 54.75% |
| Total votes | Total votes | Total votes | 996,729 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Kentucky

Incumbent Democrat Walter Huddleston ran for re-election to a third term, but lost by less than 0.5% to Jefferson County Executive Mitch McConnell.
Huddleston was unopposed in the Democratic Party's primary.
Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Mitch McConnell | 39,465 | 79.22% |
| | Republican | C. Roger Harker | 3,798 | 7.62% |
| | Republican | Tommy Klein | 3,352 | 6.73% |
| | Republican | Thurman Jerome Hamlin | 3,202 | 6.43% |
| Total votes | Total votes | Total votes | 49,817 | 100.00% |
General election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Mitch McConnell | 644,990 | 49.90% | +13.03% |
| | Democratic | Walter Huddleston (Incumbent) | 639,721 | 49.50% | −11.48% |
| | Socialist Workers | Dave Welters | 7,696 | 0.60% | |
| Majority | Majority | Majority | 5,269 | 0.41% | −23.70% |
| Turnout | Turnout | Turnout | 1,292,407 | | |
| | Republican gain from Democratic | Republican gain from Democratic | Swing | | |

## Louisiana

Incumbent Democratic J. Bennett Johnston won unopposed to a third term.
1984 United States Senate election in Louisiana :
| Party | Party | Candidate | Votes | % |
| | Democratic | J. Bennett Johnston (Incumbent) | Unopposed | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Maine

Incumbent Republican William Cohen won re-election to a second term over Democrat Libby Mitchell, State Representative.
General election results :
| Party | Party | Candidate | Votes | % |
| | Republican | William Cohen (Incumbent) | 404,414 | 73.34% |
| | Democratic | Libby Mitchell | 142,626 | 25.87% |
| | Constitutionalist | P. Ann Stoddard | 4,338 | 0.79% |
| Majority | Majority | Majority | 261,788 | 47.47% |
| Turnout | Turnout | Turnout | 551,378 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Massachusetts

The election was won by Democrat John Kerry, the Lieutenant Governor of Massachusetts who remained Senator until 2013 when he resigned to become U.S. Secretary of State. One-term incumbent Paul Tsongas declined to seek re-election and retired from the Senate following a battle with cancer.
Democratic Primary :
| Party | Candidate | Votes | % |
| Democratic | John Kerry | 322,470 | 40.83% |
| Democratic | James Shannon | 297,941 | 37.72% |
| Democratic | David M. Bartley | 85,910 | 10.88% |
| Democratic | Michael Connolly | 82,999 | 10.51% |
| | All others | 502 | 0.06% |
Republican Primary :
| Party | Candidate | Votes | % |
| Republican | Ray Shamie | 173,851 | 62.38% |
| Republican | Elliot Richardson | 104,761 | 37.59% |
| | All others | 70 | 0.03% |
General election :
| Party | Party | Candidate | Votes | % |
| | Democratic | John Kerry | 1,393,150 | 55.06% |
| | Republican | Ray Shamie | 1,136,913 | 44.94% |
| | | All others | 408 | 0.02% |
| Turnout | Turnout | Turnout | 2,530,063 | |
| Majority | Majority | Majority | 256,237 | 10.12% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Michigan

Incumbent Democrat Carl Levin won re-election to a second term.
General election results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Carl Levin (Incumbent) | 1,915,831 | 51.8% |
| | Republican | Jack Lousma | 1,745,302 | 47.2% |
| | Tisch Citizens | Arthur Richard Tisch | 22,882 | 0.6% |
| | Libertarian | Lynn Johnston | 7,786 | 0.2% |
| | Socialist | Helen Meyers | 2,686 | 0.1% |
| | Workers World | William Roundtree | 2,279 | 0.1% |
| | Independent | Max Dean | 2,135 | 0.1% |
| | Communist | Samuel L. Webb | 1,196 | 0.0% |
| | Workers League | Fred Mazelis | 818 | 0.0% |
| Turnout | Turnout | Turnout | 3,700,915 | |
| Majority | Majority | Majority | 170,529 | 4.6% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Minnesota

Incumbent Republican Rudy Boschwitz defeated Democratic challenger Joan Growe, Minnesota Secretary of State.
General election results :
| Party | Party | Candidate | Votes | % |
| | Republican | Rudy Boschwitz (Incumbent) | 1,199,926 | 58.08% |
| | Democratic | Joan Growe | 852,844 | 41.28% |
| | Socialist Workers | Eleanor Garcia | 5,351 | 0.26% |
| | New Union Party | Jeffrey M. Miller | 4,653 | 0.23% |
| | Libertarian | Richard Putman | 3,129 | 0.15% |
| Turnout | Turnout | Turnout | 2,065,903 | |
| Majority | Majority | Majority | 347,082 | 16.8% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Mississippi

Incumbent Republican Thad Cochran won re-election to a second term over former Democratic Governor William Winter.
Mississippi U.S. Senate Election, 1984 :
| Party | Party | Candidate | Votes | % |
| | Republican | Thad Cochran (Incumbent) | 580,314 | 60.9% |
| | Democratic | William Winter | 371,926 | 39.1% |
| Turnout | Turnout | Turnout | 952,240 | |
| Majority | Majority | Majority | 298,388 | 21.8% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Montana

Incumbent Max Baucus ran for re-election. He easily won renomination in the Democratic primary, and advanced to the general election, where he faced Chuck Cozzens, a former State Representative and the Republican nominee. Despite President Ronald Reagan's strong performance in the state that year, Baucus was able to easily win a second term over Cozzens.
Democratic Party primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Max Baucus (Incumbent) | 80,726 | 79.37% |
| | Democratic | Bob Ripley | 20,979 | 20.63% |
| Total votes | Total votes | Total votes | 101,705 | 100.00% |
Republican Primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Chuck Cozzens | 33,661 | 50.78% |
| | Republican | Ralph Bouma | 17,900 | 27.00% |
| | Republican | Aubyn Curtiss | 14,729 | 22.22% |
| Total votes | Total votes | Total votes | 66,290 | 100.00% |
Montana general election :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Max Baucus (Incumbent) | 215,704 | 56.89% | +1.20% |
| | Republican | Chuck Cozzens | 154,308 | 40.70% | −3.61% |
| | Libertarian | Neil Haprin | 9,143 | 2.41% | |
| Majority | Majority | Majority | 61,396 | 16.19% | +4.81% |
| Turnout | Turnout | Turnout | 379,155 | | |
| | Democratic hold | Democratic hold | Swing | | |

## Nebraska

Incumbent Democrat J. James Exon won re-election to a second term over Republican businesswoman Nancy Hoch.
General election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | J. James Exon (Incumbent) | 332,217 | 51.94% | −15.72% |
| | Republican | Nancy Hoch | 307,147 | 48.02% | +15.67% |
| | Write-ins | | 304 | 0.05% | |
| Majority | Majority | Majority | 25,070 | 3.92% | −31.40% |
| Turnout | Turnout | Turnout | 639,668 | | |
| | Democratic hold | Democratic hold | Swing | | |

## New Hampshire

Incumbent Republican Gordon J. Humphrey won re-election to a second term over Democratic U.S. Representative Norman D'Amours.
1984 United States Senate election in New Hampshire :
| Party | Party | Candidate | Votes | % |
| | Republican | Gordon J. Humphrey (Incumbent) | 225,828 | 58.75% |
| | Democratic | Norman D'Amours | 157,447 | 40.96% |
| | Libertarian | Saunder H. Primack | 1,094 | 0.28% |
| Majority | Majority | Majority | 67,381 | 17.79% |
| Total votes | Total votes | Total votes | 384,369 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## New Jersey

Incumbent Democrat Bill Bradley ran for re-election to a second term, defeating Republican Mayor of Montclair Mary V. Mochary.
1984 United States Senate election in New Jersey :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bill Bradley (Incumbent) | 1,986,644 | 64.16% |
| | Republican | Mary V. Mochary | 1,080,100 | 34.88% |
| | Independent | James T. Hagen | 10,409 | 0.34% |
| | Libertarian | Harold F. Leiendecker | 7,135 | 0.23% |
| | Socialist Labor | Jules Levin | 6,053 | 0.20% |
| | Socialist Workers | Priscilla Schenk | 3,224 | 0.10% |
| | Independent | Jasper C. Gould | 2,891 | 0.09% |
| Majority | Majority | Majority | 906,544 | 29.28% |
| Total votes | Total votes | Total votes | 3,096,456 | 100.00% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## New Mexico

Incumbent Republican Pete Domenici ran for re-election to a third term, defeating Democrat Judith Pratt.
Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Judith Pratt | 67,722 | 45.50% |
| | Democratic | Nick Franklin | 56,434 | 37.91% |
| | Democratic | Anselmo A. Chavez | 24,694 | 16.59% |
| Majority | Majority | Majority | 11,288 | 7.58% |
| Total votes | Total votes | Total votes | 148,850 | 100.00% |
General election results :
| Party | Party | Candidate | Votes | % |
| | Republican | Pete Domenici (Incumbent) | 361,371 | 71.90% |
| | Democratic | Judith Pratt | 141,253 | 28.10% |
| | N/A | Others | 10 | 0.00% |
| Majority | Majority | Majority | 220,118 | 43.79% |
| Total votes | Total votes | Total votes | 502,634 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## North Carolina

The election was fought between the Republican incumbent Jesse Helms and Democratic Governor Jim Hunt. Helms won the election, the most expensive non-presidential election in United States history up to that point, by a margin significantly reduced from that that Helms achieved in 1978.
1984 North Carolina U.S. Senate Republican primary election :
| Party | Party | Candidate | Votes | % |
| | Republican | Jesse Helms | 134,675 | 90.65% |
| | Republican | George Wimbish | 13,799 | 9.35% |
| Turnout | Turnout | Turnout | 148,574 | |
1984 North Carolina U.S. Senate Democratic primary election :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jim Hunt | 655,429 | 77.48% |
| | Democratic | Thomas Allred | 126,841 | 14.99% |
| | Democratic | Harrill Jones | 63,676 | 7.53% |
| Turnout | Turnout | Turnout | 845,946 | |
Hunt had a commanding lead in opinion polls for much of the campaign, with one poll in 1983 putting him nineteen points clear of Helms. However, that was changed by the most bitterly contested election in the country that year. Hunt ran a campaign ad connecting Helms to death squads in El Salvador through his association with the Nationalist Republican Alliance, for whom Roberto d'Aubuisson had recently run for the President of El Salvador. In the short time before election day, however, the highly popular incumbent US President Ronald Reagan gave Helms a significant boost by campaigning for him and running a local TV ad praising Helms and asking registered voters in North Carolina to re-elect him.
The election cost a total of $26,379,483 in total reported spending (over twelve times as much as the 1980 race), of which, 64% ($16.9m) was spent by Helms.
1984 North Carolina U.S. Senate election :
| Party | Party | Candidate | Votes | % |
| | Republican | Jesse Helms (Incumbent) | 1,156,768 | 51.7% |
| | Democratic | Jim Hunt | 1,070,488 | 47.8% |
| | Libertarian | Bobby Emory | 9,302 | 0.4% |
| | Socialist Workers | Kate Daher | 2,493 | 0.1% |
| Turnout | Turnout | Turnout | 2,239,051 | |
| Majority | Majority | Majority | 86,280 | 3.9% |
| | Republican hold | Republican hold | Republican hold | Republican hold |
Voters Education Project (VEP) in Atlanta study showed that Helms received 63 percent of the white vote and was particularly successful in small towns and rural areas, while receiving less than 1 percent of the black vote in 35 almost-all-black precincts. "Hunt got 37 percent of the white and 98.8 percent of the black vote, according to VEP. But only 61 percent of registered blacks voted, down from 63 percent in 1980." While, It had among the lowest industrial wages in the United States and was third in terms of mobile homes.

## Oklahoma

Incumbent Democrat David Boren won re-election to a second term.
Oklahoma general election :
| Party | Party | Candidate | Votes | % |
| | Democratic | David Boren (Incumbent) | 906,131 | 75.6% |
| | Republican | Will E. Bill Crozier | 280,638 | 23.4% |
| | Libertarian | Robert T. Murphy | 11,168 | 0.9% |
| Majority | Majority | Majority | 625,493 | 52.2% |
| Total votes | Total votes | Total votes | 1,197,937 | 100.00% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Oregon

Incumbent Republican Mark Hatfield sought re-election, defeating Democratic State Senator Margie Hendricksen.
1984 United States Senate election in Oregon :
| Party | Party | Candidate | Votes | % |
| | Republican | Mark Hatfield (Incumbent) | 808,152 | 66.53% |
| | Democratic | Margie Hendricksen | 406,122 | 33.43% |
| | Independent Republican | Ralph H. Preston | 461 | 0.04% |
| Majority | Majority | Majority | 402,030 | 33.10% |
| Total votes | Total votes | Total votes | 1,214,735 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Rhode Island

Incumbent Democrat Claiborne Pell sought re-election, defeating Republican Barbara M. Leonard.
General election results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Claiborne Pell (Incumbent) | 285,811 | 72.66% |
| | Republican | Barbara Leonard | 107,545 | 27.34% |
| Majority | Majority | Majority | 178,266 | 45.32% |
| Total votes | Total votes | Total votes | 393,356 | 100.00% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## South Carolina

Popular incumbent Republican Strom Thurmond cruised to re-election against Democratic challenger Melvin Purvis. Melvin Purvis, a white minister and the son of famous FBI agent Melvin Purvis, won a close race against black photographer Cecil J. Williams. The closeness of the race and the fact that the black candidate did not win propelled Jesse Jackson to request a Justice Department investigation into the primary and he also considered an independent bid for the seat. Governor Richard Riley and 3rd district Representative Butler Derrick flirted with running, but backed down when Thurmond received endorsements from prominent Democrats in South Carolina.
Democratic Primary :
| Candidate | Votes | % |
| Melvin Purvis | 149,730 | 50.2% |
| Cecil J. Williams | 148,586 | 49.8% |
Senator Strom Thurmond easily defeated Robert Cunningham to advance to the general election.
Republican Primary :
| Candidate | Votes | % |
| Strom Thurmond | 44,662 | 94.3% |
| Robert H. Cunningham | 2,693 | 5.7% |
Thurmond received endorsements from former Democratic governor Robert Evander McNair, Charleston mayor Joseph P. Riley Jr., and an assortment of black mayors in the state. He did not face a serious challenge and spent almost $1.5 million on the race whereas Purvis spent less than $10,000. An ironic footnote to the election is the fact that Purvis used Thurmond's age as an issue in the campaign. He claimed Thurmond was too old, yet Purvis died less than two years after the election of a heart attack at age 46.
South Carolina U.S. Senate Election, 1984 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Strom Thurmond (Incumbent) | 644,814 | 66.8% | +11.2% |
| | Democratic | Melvin Purvis | 306,982 | 31.8% | −12.6% |
| | Libertarian | Stephen Davis | 13,323 | 1.4% | +1.4% |
| | No party | Write-Ins | 335 | 0.0% | 0.0% |
| Majority | Majority | Majority | 337,832 | 35.0% | +23.8% |
| Turnout | Turnout | Turnout | 965,454 | 68.7% | +11.0% |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |

## South Dakota

Incumbent Republican Larry Pressler won re-election for a second term, defeating Democrat George V. Cunningham.
1984 United States Senate election in South Dakota :
| Party | Party | Candidate | Votes | % |
| | Republican | Larry Pressler (Incumbent) | 235,176 | 74.49% |
| | Democratic | George V. Cunningham | 80,537 | 25.51% |
| Majority | Majority | Majority | 154,639 | 43.79% |
| Total votes | Total votes | Total votes | 315,713 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Tennessee

Three-term popular incumbent Howard Baker, who had served as United States Senate Majority Leader since 1981 (Minority Leader from 1977 to 1981) decided not to seek re-election in order to concentrate on a planned bid for 1988 Republican presidential nomination (which did not happen, as he later accepted a White House Chief of Staff position under President Ronald Reagan). This made a seat open.
Democrats nominated Representative and future Vice President of the United States Al Gore, whose father Albert Gore, Sr. once held the other Tennessee Senate seat.
Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Al Gore | 476,582 | 100.00% |
| Total votes | Total votes | Total votes | 476,582 | 100.00% |
In the Republican primary, held on August 2, state Senator Victor Ashe easily emerged as a winner.
Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Victor Ashe | 145,744 | 86.47% |
| | Republican | Jack McNeil | 17,970 | 10.66% |
| | Republican | Herbert David Patty | 4,777 | 2.83% |
| | Republican | Write-in | 49 | 0.03% |
| Total votes | Total votes | Total votes | 168,540 | 100% |
Although the Senate election coincided with the landslide re-election of President Reagan, who carried Tennessee by a wide margin, this time his victory did not have any coattails, as it did in 1980, and Democrats picked up three Republican seats. One of the Democratic gains was in Tennessee, where moderate democrat Gore won in a landslide:
General election results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Al Gore | 1,000,607 | 60.72% |
| | Republican | Victor Ashe | 557,016 | 33.80% |
| | Independent | Ed McAteer | 87,234 | 5.29% |
| | Independent | Khalil-Ullah Al-Muhaymin | 3,179 | 0.19% |
| Turnout | Turnout | Turnout | 1,640,836 | |
| Majority | Majority | Majority | 443,591 | 26.92% |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

## Texas

Incumbent Republican John G. Tower decided to retire, instead of seeking a fifth term. Republican Phil Gramm won the open seat over Democratic State Senator Lloyd Doggett.
The Democratic primary was 45% Hispanic, but included many moderate to conservative voters. Hance positioned himself as the most moderate to conservative candidate, who co-sponsored President Ronald Reagan's tax package. Doggett was the more liberal candidate, attacking Reaganomics and getting endorsements from the Texas teachers' union and Agriculture Commissioner Jim Hightower. Krueger was seen as the front runner and was a moderate who supported the state's oil and gas industry, but had close ties with the Hispanic community because he was Spanish-speaking. Hance attacked both Kroeger and Doggett for supporting amnesty for illegal aliens and supporting gay rights. The initial primary was extremely close between the top three candidates. Each candidate got 31% of the electorate. Hance ranked first, only 273 votes ahead of Doggett and 1,560 votes ahead of Krueger.
Since no candidate passed the 50% threshold, Hance and Doggett qualified for the run-off election. Hance fired his pollster despite ranking first. Krueger endorsed fellow U.S. Congressman Hance, saying "Ultimately, the quality of one's public service depends upon the character that one displays in filling an office." In the June election, Doggett very narrowly defeated Hance by just 1,345 votes.
Initial election on May 5, 1984
May Democratic primary :
| Party | Candidate | Votes | % |
| Democratic | Kent Hance | 456,446 | 31.2% |
| Democratic | Lloyd Doggett | 456,173 | 31.2% |
| Democratic | Bob Krueger | 454,886 | 31.1% |
| Democratic | David Young | 47,062 | 3.2% |
| Democratic | Robert S. Sullivan | 34,733 | 2.4% |
| Democratic | Harley Schlanger | 14,149 | 1.0% |
Run-off election on June 2, 1984
June Democratic primary :
| Party | Party | Candidate | Votes | % |
| | Democratic | Lloyd Doggett | 491,251 | 50.1% |
| | Democratic | Kent Hance | 489,906 | 49.9% |
The Republican primary was a highly competitive, multimillion-dollar contest. Gramm recently switched parties in 1983, but he was a conservative who supported Reaganomics. Gramm spent $4 million.
May Republican primary :
| Party | Candidate | Votes | % |
| Republican | Phil Gramm | 247,280 | 73.3% |
| Republican | Ron Paul | 55,771 | 16.5% |
| Republican | Robert Mosbacher Jr. | 26,250 | 7.8% |
| Republican | Hank Grover | 8,055 | 2.5% |
General election results :
| Party | Party | Candidate | Votes | % |
| | Republican | Phil Gramm | 3,111,348 | 58.6% |
| | Democratic | Lloyd Doggett | 2,202,557 | 41.4% |
| Turnout | Turnout | Turnout | 5,313,905 | |
| Majority | Majority | Majority | 908,791 | 17.2% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Virginia

Incumbent Republican John W. Warner won re-election to a second term. He handily defeated Edythe C. Harrison, member of the Virginia House of Delegates the "first woman in Virginia nominated by the Democratic Party for statewide office."
Virginia general election :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | John Warner (Incumbent) | 1,406,194 | 70.05% | +19.88% |
| | Democratic | Edythe C. Harrison | 601,142 | 29.95% | −19.84% |
| | Write-ins | | 151 | 0.01% | −0.03% |
| Majority | Majority | Majority | 805,052 | 40.10% | +39.71% |
| Turnout | Turnout | Turnout | 2,007,487 | | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## West Virginia

Incumbent Democratic Jennings Randolph decided to retire, instead of seeking a fifth term. Democrat Jay Rockefeller won the open seat over Republican John Raese.
1984 United States Senate election in West Virginia :
| Party | Party | Candidate | Votes | % |
| | Democratic | Jay Rockefeller | 374,233 | 51.82% |
| | Republican | John Raese | 344,680 | 47.73% |
| | Socialist Workers | Mary E. 'Joan' Radin | 3,299 | 0.46% |
| Majority | Majority | Majority | 29,553 | 3.09% |
| Total votes | Total votes | Total votes | 722,212 | 100.00% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Wyoming

Incumbent Republican Alan K. Simpson has won re-election for a second term, defeating Democrat Victor A. Ryan.
1984 United States Senate election in Wyoming :
| Party | Party | Candidate | Votes | % |
| | Republican | Alan K. Simpson (Incumbent) | 146,373 | 78.32% |
| | Democratic | Victor A. Ryan | 40,525 | 21.68% |
| Majority | Majority | Majority | 105,848 | 43.79% |
| Total votes | Total votes | Total votes | 186,898 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |