1948 Democratic presidential primaries were the selection process by which voters of the Democratic Party chose its nominee for President of the United States in the 1948 U.S. presidential election . Incumbent President Harry S. Truman was selected as the nominee through a series of primary elections and caucuses culminating in the 1948 Democratic National Convention held from July 12 to July 14 , 1948 , in Philadelphia , Pennsylvania . As a sitting President , his nomination was secured
1948 Democratic National Convention
1948 Democratic National Convention
1948 Democratic Party presidential primaries