The political world spends a lot of time discussing former President Donald Trump's lead over the Republican field in national polls — currently at 45.4%, according to the RealClearPolitics average of polls. But, of course, the race will unfold as a series of state contests, beginning in Iowa on Jan.
15, New Hampshire on Jan. 23, Nevada on Feb. 8 and South Carolina on Feb. 24. By then, Republicans …