There were many different restrictions during this time. One is the polling taxes which taxed individuals when they registered to vote..this prevented blacks from voting because they didnt have any money at this time. There were also literacy tests in place before an individual voted. This tested a citizens ability to read by placing the state constitution in front of the person and asked them to read and interpret it. Only about 10% of blacks were able to vote because of this. Also there were understanding tests and the grandfather clause as well. Other restrictions were things such as lynch mobbing and other harassment threats.
Voting restrictions in the south were intended to prevent african americans from voting so they had to take tests like literacy tests, they had to pay a poll tax and there grandfather had to of voted before them which they couldn't because it was illegal.
I have no idea what so ever