The States' Rights Democratic Party dissolved after the 1948 election, as Truman, the Democratic National Committee, and the New Deal Southern Democrats acted to ensure that the Dixiecrat movement would not return in the 1952 presidential election. Some Southern diehards, such as Leander Perez of Louisiana, attempted to keep it in existence in their districts. Former Dixiecrats received some backlash at the 1952 Democratic National Convention, but all Southern delegations were seated after agreeing to a party loyalty pledge. Moderate Alabama Senator John Sparkman was selected as the Democratic vice presidential nominee in 1952, helping to boost party loyalty in the South.