The specifics of the platform, I don`t think, are necessarily going to be written by Bernie Sanders, but the themes of the platform are going to be written by Bernie Sanders.

We played all that rhetoric, all of the thing - the provocative inflammatory things [Donald Trump] said over the last year, does that all add up to buying him enough wiggle room with his base that he can get out and change his position like that?

I don`t know how it would have gone, but I do know this - Mitt Romney was looking at running and the reason he decided not to run was because he decided that someone was unbeatable. That someone was Jeb Bush.

We are waiting for Donald Trump`s big immigration speech. There are lots of unanswered questions that remain about where exactly Trump stands on deportation forces, on what to do with the millions of immigrants who are here illegally now, and where he stands on the question of birthright citizenship.

He [Donald Trump] found that sweet spot in the Republican Party, just politically, where you had the rest of the party saying it`s just impractical. You can`t deport 11 million people. You can`t round them up and deport them, and his position was basically, hey, Republican voters. Don`t listen them, you can and I will.

Like the kind of voter who has been turned off to [Donald] Trump, who would normally vote Republican in an election like this, that`s who we`re talking about, can they get past - even if he comes to a position that`s more agreeable for them, a tone that`s more agreeable, can they get past the last year?

The perception that Donald Trump has softened on immigration or is about to soften on immigration has some on the right concerned that he could lose support among his most loyal base of supporters, though he`d been drawn to his hard-line positions on immigration early in the campaign.