i do think he'll do everything he possibly can to win the nomination, though - and i he can, he'll take it. he'd legitimately rather run as a democrat. it makes everything easier.
but, i just have to think he knows his odds, and i couldn't imagine what else he's planning around. it depends on everything, of course. but the thinking has to be that he gets to the convention pretty close in delegates, and with all the momentum, and then marches the left out of the party once and for all.
i don't even think you need to pull out the indictment. what if he's beating her by 10% in national polls? consistently? right now, it's still ambiguous whether one candidate is polling stronger than the other. by june, it may not be.