| Cathy Allen* | 27,263 | 33.4% | ||||||
| James J. Davis | 12,801 | 15.7% | ||||||
| write-ins | 100 | 0.1% |
| Joel Rose | 11,544 | 14.2% | ||||||
| Mary W. Washington* | 29,729 | 36.5% | ||||||
| write-ins | 82 | 0.1% |
| Marilyn A. Crosby* | 25,818 | 64.0% | ||||||
| James Tomasic | 14,396 | 35.7% | ||||||
| write-ins | 114 | 0.3% |
* = winner
Source: St. Mary's County Board of Elections
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