Palin said, "I detest crony capitalism." Perry's middle name is crony capitalism. Do the math.
She may end up endorsing him if he defeats her for the nomination because she's a good Republican and believes in "anybody but Obama". But Perry fans hoping for a full-throated endorsement like she gave him for governor stand to be disappointed. It'll likely be a polite and perfunctory endorsement like Reagan gave Ford in '76.
Only to those that have delved deeply into his record. In other words, not very many people at all.