The Republicans have a habit of nominating the “next in line” – that is, someone who ran before but didn’t quite get the nomination. Think Mitt Romney (ran in 2008, nominated in 2012), John McCain (ran in 2000, nominated in 2008), and Ronald Reagan (ran in 1976, won the nomination and the presidency in 1980).
But this year, there’s no next-in-line candidate poised to clear the field.