St. Mary's County, MD — Elections & Voting
Presidential election results and party lean trends
Election Overview
Source: St. Mary's County (2024)2024 Winner
Republican
Dem Votes
23,531
40.2%
GOP Votes
33,582
57.4%
Total Votes
58,543
Margin
R+17.2%
Shift from 2020
R+3.4pp
vs prior election
📊Election Results by Year
2016–2024📈Partisan Lean Trend
R+17.2%Election History
Source: County-Level Election Results| Year | Dem Votes | GOP Votes | Total | Dem % | GOP % | Margin |
|---|---|---|---|---|---|---|
| 2024 | 23,531 | 33,582 | 58,543 | 40.2% | 57.4% | R+17.2 |
| 2020 | 23,138 | 30,826 | 55,665 | 41.6% | 55.4% | R+13.8 |
| 2016 | 15,786 | 26,889 | 45,169 | 34.9% | 59.5% | R+24.6 |
In the 2024 presidential election, St. Mary's County recorded 58,543 total votes. Republicans won the county with 57.4% of the vote compared to 40.2% for Democrats, a margin of R+17.2%. Compared to 2020, the margin shifted R+3.4pp from the previous election. Since 2016, St. Mary's County has shifted 7.4 percentage points toward Democrats.