The elections may be over, but plenty of states are hanging “Vacancy” signs out front. As Donald Trump poaches more and more Republicans to fill key seats in his administration, there’s a significant vacuum starting to take shape in states from red Florida to blue New York. One of the biggest, people would argue, is the successor to America’s vice president-elect, Senator J.D. Vance (R-Ohio). Complicating matters, at least for conservatives, is that the decision is in the hands of Governor Mike DeWine...