# 1980 United States Senate election in Maryland

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Question P :
Government :
vte :
The 1980 United States Senate election in Maryland took place on November 4, 1980.
Incumbent Republican U.S Senator Charles Mathias won re-election to a third term in a landslide, defeating Democratic State Senator Edward T. Conroy.
As of 2024, this is the last time a Republican won a U.S. Senate election in Maryland. It is also the last time a Republican won Prince George's County and Baltimore City in a statewide election.

## Republican primary
### Candidates

* Roscoe Bartlett
* John M. Brennan
* Jack Fortune Holden
* Charles Mathias, incumbent Senator
* V. Dallas Merrell
* Gerald G. Warren

### Results

Republican Senate primary :
| Party | Party | Candidate | Votes | % |
| | Republican | Charles Mathias (incumbent) | 82,430 | 54.96% |
| | Republican | John M. Brennan | 24,848 | 16.57% |
| | Republican | V. Dallas Merrell | 23,073 | 15.39% |
| | Republican | Roscoe Bartlett | 10,970 | 7.32% |
| | Republican | Jack Fortune Holden | 5,176 | 3.45% |
| | Republican | Gerald G. Warren | 3,476 | 2.32% |
| Total votes | Total votes | Total votes | 149,973 | 100.00% |

## Democratic primary
### Candidates

* Frank J. Broschart, candidate for U.S. Representative in 1972
* Edward T. Conroy, State Senator from Bowie
* Mello Cottone
* Victor Crawford, State Senator from Silver Spring
* Robert L. Douglass, State Senator from Baltimore
* John A. Kennedy
* Dennis C. McCoy, Delegate from Baltimore
* R. Spencer Oliver, Chief of Staff of the Commission on Security and Cooperation in Europe
* David E. Shaw
* Kurt Summers
* Richard J. Taranto
* James A. Young

### Results

Democratic Senate primary :
| Party | Party | Candidate | Votes | % |
| | Democratic | Edward T. Conroy | 79,033 | 22.42% |
| | Democratic | Victor Crawford | 52,803 | 14.98% |
| | Democratic | Robert L. Douglass | 43,035 | 12.21% |
| | Democratic | Dennis C. McCoy | 40,510 | 11.49% |
| | Democratic | R. Spencer Oliver | 35,407 | 10.04% |
| | Democratic | John A. Kennedy | 20,255 | 5.75% |
| | Democratic | Frank J. Broschart | 19,455 | 5.52% |
| | Democratic | James A. Young | 17,364 | 4.93% |
| | Democratic | Richard J. Taranto | 12,375 | 3.51% |
| | Democratic | Mello Cottone | 11,461 | 3.25% |
| | Democratic | David E. Shaw | 10,869 | 3.08% |
| | Democratic | Kurt Summers | 9,952 | 2.82% |
| Total votes | Total votes | Total votes | 352,519 | 100.00% |

## General election
### Results

1980 United States Senate election in Maryland :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Charles Mathias (Incumbent) | 850,970 | 66.17% | 8.84 |
| | Democratic | Edward T. Conroy | 435,118 | 33.83% | 8.84 |
| Total votes | Total votes | Total votes | 1,286,088 | 100.00% | |
| | Republican hold | Republican hold | Swing | | |

### Results by county

| County | Charlies Mathias Republican | Charlies Mathias Republican | Edward T. Conroy Democratic | Edward T. Conroy Democratic | Margin | Margin | Total Votes Cast |
| County | # | % | # | % | # | % | Total Votes Cast |
| Allegany | 18,700 | 73.25% | 6,829 | 26.75% | 11,871 | 46.50% | 25,529 |
| Anne Arundel | 76,352 | 69.80% | 33,028 | 30.20% | 43,324 | 39.61% | 109,380 |
| Baltimore (City) | 108,051 | 56.50% | 83,176 | 43.50% | 24,875 | 13.01% | 191,227 |
| Baltimore (County) | 151,087 | 65.75% | 78,694 | 34.25% | 72,393 | 31.51% | 229,781 |
| Calvert | 5,774 | 65.10% | 3,096 | 34.90% | 2,678 | 30.19% | 8,870 |
| Caroline | 3,586 | 69.54% | 1,571 | 30.46% | 2,015 | 39.07% | 5,157 |
| Carroll | 16,623 | 61.78% | 10,285 | 38.22% | 6,338 | 23.55% | 26,908 |
| Cecil | 9,507 | 65.08% | 5,101 | 34.92% | 4,406 | 30.16% | 14,608 |
| Charles | 11,308 | 63.32% | 6,551 | 36.68% | 4,757 | 26.64% | 17,859 |
| Dorchester | 5,463 | 68.43% | 2,520 | 31.57% | 2,943 | 36.87% | 7,983 |
| Frederick | 26,230 | 76.31% | 8,143 | 23.69% | 18,087 | 52.62% | 34,373 |
| Garrett | 5,136 | 76.15% | 1,609 | 23.85% | 3,527 | 52.29% | 6,745 |
| Harford | 32,805 | 72.31% | 12,562 | 27.69% | 20,243 | 44.62% | 45,367 |
| Howard | 31,740 | 72.61% | 11,970 | 27.39% | 19,770 | 45.23% | 43,710 |
| Kent | 3,331 | 70.13% | 1,419 | 29.87% | 1,912 | 40.25% | 4,750 |
| Montgomery | 196,817 | 76.49% | 60,506 | 23.51% | 136,311 | 52.97% | 257,323 |
| Prince George's | 87,311 | 52.33% | 79,532 | 47.67% | 7,779 | 4.66% | 166,843 |
| Queen Anne's | 4,730 | 68.64% | 2,161 | 31.36% | 2,569 | 37.28% | 6,891 |
| St. Mary's | 7,602 | 62.55% | 4,551 | 37.45% | 3,051 | 25.10% | 12,153 |
| Somerset | 2,986 | 65.38% | 1,581 | 34.62% | 1,405 | 30.76% | 4,567 |
| Talbot | 6,439 | 77.10% | 1,912 | 22.90% | 4,527 | 54.21% | 8,351 |
| Washington | 22,460 | 68.73% | 10,220 | 31.27% | 12,240 | 37.45% | 32,680 |
| Wicomico | 11,675 | 67.34% | 5,663 | 32.66% | 6,012 | 34.68% | 17,338 |
| Worcester | 5,257 | 68.32% | 2,438 | 31.68% | 2,819 | 36.63% | 7,695 |
| Total | 850970 | 66.17% | 435,118 | 33.83% | 415,852 | 32.33% | 1,286,088 |

#### Counties that flipped from Democratic to Republican

* Baltimore (County)
* Baltimore (City)