I will never back or support a RINO - especially a liberal progressive like Romney. Newt is a party man, he has to. I am not a party man. The Republican Party can go to hell as far as I am concerned.
I agree with you, but for a conservative in the party running for office, they want to be able to hold onto power to try and influence the party in the right direction. It is understandable for them to go along with the party because they need to stay in there and use their power to influence it. If Newt doesn’t win but can influence the platform at the convention, that’s better than him just dropping out and having no influence.
I won’t back a RINO for president, but president is different from one member in one narrow district in a deep blue state. You back those people knowing you won’t have their vote on everything but knowing half a loaf is better than none.