The goal was to win enough presidential third party votes to send the election to the Congress; however, the southern racists lost. Although they did receive 39 electoral votes. After this, Dixiecrats moved to the Republican Party. Truman advocated for policies that would keep blacks safe. Hubert Humphery defended Civil Rights.
Many poor whites supported the Democratic plans of helping the underprivileged southerners until the plans of the New Deal began to benefit blacks more than whites. Many racist were so discriminatory, they didn't want to share the same drinking fountains and washrooms with Blacks.
The Republican Party played on white southern rage to move them to the GOP, it worked. As the Republican Party became the party for whites and the Democratic Party became the party for African-Americans.