LAS VEGAS — As the calendar gets ready to flip to February and the remaining Republican presidential candidates move on from the early nominating states of Iowa and New Hampshire, it’s Nevada — not South Carolina — that’s next on the schedule. Former President Donald Trump will campaign in Las Vegas on Saturday, while Nikki Haley, a former governor of South Carolina, has so far ignored the state. In a confusing and complicated process, the two candidates will not appear on the same ballot in Nev