In the standard polling, Donald Trump is on top, with a double digit lead over his nearest rival, Ted Cruz.
But in hypothetical one-on-one races, Cruz would trump Trump 51% to 43%. But Trump would beat Marco Rubio 52% to 45%.
Of course, those one on one races are not really happening. The closest is in Iowa where Rubio and the other candidates are not even in the same tier as Trump and Cruz.
Tonight’s debate may change things.