Tim Scott has dropped out. Who will be next? I’m not sure that anyone will — at least not until it’s too late. Tim Scott and Mike Pence dropped out because they were actually running for president, and so, when they realized they were not going to be president, they had no reason to stay in. The two candidates who should clearly go away now — Vivek Ramaswamy and Chris Christie — are not running for president, and thus have no great incentive to get out of the race. So they won’t — which, in turn, will make it tougher for the remaining two candidates who really are running for president — that’s Ron DeSantis and Nikki Haley — to get separation.