Let's just get this out of the way first. Donald J. Trump is now highly favored to win the nomination and that's true even if the field winnows. The Donald's appeal is attitudinal, not ideological, which allows him to compete in majority rural, suburban and urban congressional districts, as opposed to the historical conservative vs. moderate dynamic that has traditionally been decided in the suburbs. Because proportional delegates are awarded to candidates in a Republican primary based on the results of voting totals and thresholds in congressional districts, Trump is well-positioned to win the nomination. In fact, as I explained...