Politics in the South were completely changed by African Americans having the power to vote. White politicians could no longer make laws about African Americans without blacks having a say. In many parts of the South, black people outnumbered whites. This meant that they could vote in black politicians, and vote out racist whites. Also, black people who were registered to vote could be on juries. Before this, any time an African American was charged with a crime, the jury that decided whether they were guilty would be all-white.