He said to the voters of Texas that he wouldn't run for president. That was a promise, and he broke it.
/s
All the more poignant, as today I read a couple of posts from a Perry supporter knocking Palin that Palin couldn't be trusted because she didn't finish doing what she said she was going to do -- be governer of Alaska. His guy Perry, on the other hand -- well, see, that's different! *rolls eyes*