Rand Paul is sinking. His father received 21% in Iowa in 2012. Rand had a very poor debate performance, rolling his eyes and looking away, during his dialogue with Chris Christie, made him look childish. He's been chainsawing paper to try and get attention.
Rick Perry is cooked. Didn't get in the top 10 debate, and with the word that he can't pay his staffers anymore, he's hopeless. It would smart of Scott Walker and Ted Cruz to put a call in to Rick Perry, to try and get Perry's endorsement on his way out the door. Unlikely to help much in the polls, but Perry does have some high dollar backers.