For those people who are re-registering due to address change, there is no 30-day requirement. They are allowed to vote even if they are within the 30 day period.
NO, you do NOT need a photo ID to register. Even though the voter registration form says "Attach ID Here," you can ignore this part of the form. However, you WILL need a photo ID…
You can either download a registration form or register online at SCVotes.org.
Register by filling out the form legibly, accurately and completely. Be sure to sign and date the form on the red "Signature / Date of Application" line.
College students may register to vote either in the county in which they live while attending college or at their previous address, but not both.