Yes what is he thinking? Seems like such a baby and lacking on ethics. He signed the pledge he knew what that meant he should have either not gone or supported the nominee which is what he said he would do.
I do not think I could ever vote for him because he just proved he can not be taken on his word.
They all signed the pledge because none of them thought that Trump had ANY chance of winning..and they made Trump sign the pledge because they thought that if he lost, he would tell his supporters to vote 3rd party..Trump signed it, EVERYONE did and only a few showed true class in endorsing Trump..Scott Walker, I have a new respect for the man he showed CLASS last night, heck even Marco Rubio showed more class than Ted Cruz