The 1948 United States elections were held on November 2, 1948. The election took place during the beginning stages of the Cold War. Democratic incumbent President Harry S. Truman was elected to a full term, defeating Republican nominee New York Governor Thomas E. Dewey and two erstwhile Democrats. The Republicans, who had just won both the House and the Senate two years earlier, ceded control of both chambers of Congress to the Democrats. Puerto Rico also elected Luis Muñoz Marín of the Popular Democratic Party as its first democratically elected governor.