A new poll has Donald Trump way ahead. Polling at 36%, Trump is 20 points in front of his closest competitor, Sen. Ted Cruz. Ben Carson is polling at 14% and Sen. Marco Rubio is at 12%. Nobody else is even close. A few months is a long time in American politics, although for now it appears that either Trump, Carson, Rubio or Cruz will take the Republican nomination. To some extent, it's hard to be any more precise than that. We'll have to wait and see how things unfold once the primaries get going in February. If Trump were...