support. meanwhile, in south carolina, billionaire businessman donald trump is expected to win the republican contest. the big question is how big the margin will be. who'll gain momentum on the vote. >> we are in both states with the voting. we'll speak to alan fishing in columbia >>> first, to michael shure, in los angeles. and, so, clinton has won, michael. was it by a big enough margin, was it convincing. well it wasn't really about margin here, she's within four points now, over by four points. it was about changing the narrative for clinton. it is a clear victory. she won iowa by percentage points and got trounced in new hampshire. coming to the state. it's the type of state she should do well in, and having success is comforting to the