Voting Rights By BuiTheGawd Period: Jan 1, 1850 to Dec 31, 2000 Voting Rights Dec 6, 1865 13th Amendment abolishes slavery Feb 3, 1869 15th Amendment allows colored males to vote 1896 South states make laws to stop colored voting 1898 Supreme court says literacy tests are ok 1915 Supreme court says Grandfather clause is bad 1920 19th Amendment lets women vote. 1937 Supreme court says poll taxes are ok 1964 24th Amendment outlaws poll taxes 1964 Freedom summer tries to register colored to vote in Mississippi 1965 Voting Rights Act bans discrimination in elections