So it’s on to the Palmetto state! South Carolina, which refuses to lower the Confederate stars and bars, the state where one third of all Africans shipped as slaves arrived in the New World, the state of Fort Sumter, where the US Civil war really began. It is this state that will prove the last real competition for the vying delegates, before February 5 — Tsunami Tuesday — potentially (and I emphasise potentially) delivers a slam dunk for one candidate, on one or both tickets, writes Guy Rundle.