You have the right to vote. If anyone tries to stop you, call the Election Protection Hotline at 1-866-687-8683. We also wrote a handy guide that outlines your voting rights.
As always, it's best to double check with your state for any recent changes to election rules: South Carolina Election Website

South Carolina voter registration

South Carolina absentee ballots

South Carolina early voting

South Carolina voter ID

Additional VOTE.org links