I grew up in Charleston, which is mostly a base of McCain support in SC, but yesterday I sent out an email to about 20 people who I knew in the state - a mixture of old and young friends.
The result: at the end of the day I've got 15 votes for Huckabee, 2 for McCain, 1 for Thompson ... and 1 for Ron Paul.
This result is guaranteed to be completely inaccurate. But I was surprised that 1) Huckabee's support was not exclusive to Evangelicals, from middle-aged Episcopalians to young Catholics; 2) the rationale behind the decision was in several cases "I don't want McCain to win"; and 3) every single person - EVERY single one of them - expects McCain to win the state, and to be the nominee.
Just for what it's worth.