I'm guessing Walker will the first to say, 'Trump who?', as he's the most accomplished chameleon in the group.
'Right-to-work bill, now?'
'Presidential run,' nah?'
Flip-flppping is his second, er, first nature.
In fact, I can almost hear Walker saying, "You know, I was always a Ted Cruz kind of guy. Hey, I'm the one who zinged Trump in the debate with that 'we don't need an apprentice in the White House' line of mine. Sure wish I'd said "apparatchik.'
So my bailing out bet is on Walker, since Ryan still needs Trump to sign The Ryan Medicare Wipeout Budget and Priebus has thrown in with Steve Bannon for a top swamp-filling position.