South Carolina is going to be bloody.

In another dimension, New Hampshire voters from both parties coalesced around one candidate and the primaries continued along as little more than a formality. Instead, the Democrats are looking at a lengthy duel stretching well into spring. The Republicans are in even wore shape.

The South Carolina GOP primary is on February 20, and polling averages have Donald Trump first, followed by Ted Cruz, Marco Rubio, Jeb Bush, Ben Carson, and Chris Christie. Tuesday’s results, as of this moment, are ordered thus: Trump, John Kasich, Cruz, Bush, Rubio, and Christie.

The state has a history of dirty tricks. The next 10 days are going to be...