I moved to South Carolina about three years ago, and voted in the 2014 midterm election. I don't remember exactly who I voted for, but between the big-ticket races and the local ones I'm certain I chose both Democrats and Republicans, and I think some minor-party candidates too.
A volunteer for a presidential candidate's campaign knocked on my door last week and asked for me by name. Out of idle curiosity I asked how he got my information. His answer was that in South Carolina, when a voter casts a ballot, the political party of the candidate(s) voted for receive the voter's contact information.
This seems highly suspicious to me. I know that voter registration records are public information to a degree, but I was under the impression that what goes on at the actual ballot box is entirely private.
Was the volunteer just misinformed? If not, what law authorizes this, what info does it release and who can access it?