1948 United States presidential election in Maryland

The 1948 United States presidential election in Maryland took place on November 2, 1948, as part of the 1948 United States presidential election. State voters chose eight representatives, or electors, to the Electoral College, who voted for president and vice president.

Maryland was won by Governor Thomas Dewey (R–New York), running with Governor Earl Warren, with 49.40% of the popular vote, against incumbent President Harry S. Truman (D–Missouri), running with Senator Alben W. Barkley, with 48.01% of the popular vote. This was the first of three times between 1888 and 2000 that Maryland's popular vote had backed a losing candidate nationwide (along with 1968 and 1980).

As of 2020, this is the last time that a Democratic candidate has won the presidency without carrying Maryland and the only time that the state has backed a losing Republican candidate. As of 2020, this remains the last of only 2 occasions in which Maryland was more Republican than the nation (the other occasion being 1896).

Counties that flipped from Republican to Democratic

 * Allegany