U.S. presidential election, 1948

The United States presidential election of 1948 is considered by most historians as the greatest election upset in American history. Virtually every prediction (with or without public opinion polls) indicated that incumbent President Harry S. Truman would be defeated by  Republican Thomas Dewey. Truman won, overcoming a three-way split in his own party. Truman's surprise victory was the fifth consecutive win for the Democratic Party in a presidential election. Truman's election confirmed the Democratic Party's status as the nation's majority party, a status they would retain until the 1980s.
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