What is Nikki Haley doing? The answer is clear enough: demonstrating the inconvenient fact that a sizable portion of the Republican primary electorate isn’t on board with another Donald Trump nomination‚ no matter how inevitable it seems. She did it again in Saturday’s South Carolina primary‚ which saw the former United Nations ambassador trounced by 20 points in her home state—yet still notching 40% of the vote‚ a remarkable showing for a candidate with no plausible path to victory. “40% is...