| M. Catherine (Cathy) Allen* | 27,750 | 58.11% | |||||||||
| Elena B. Brewer | 19,688 | 41.23% | |||||||||
| write-ins | 317 | 0.66% | |||||||||
| Total | 47,755 | 100.00% |
| David C. Drys | 19,519 | 40.27% | |||||||||
| Mary M. Washington* | 28,703 | 59.21% | |||||||||
| write-ins | 251 | 0.52% | |||||||||
| Total | 48,473 | 100.00% |
| Brandie M. Edelen | 21,635 | 42.88% | |||||||||
| Joshua R. Guy* | 28,459 | 56.41% | |||||||||
| write-ins | 358 | 0.71% | |||||||||
| Total | 50,452 | 100.00% |
* = winner
Source: St. Mary's County Board of Elections
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