Thompson hits Huckabee in Fla. for past support of lifting Cuban embargo. Read Thompson research.

Backpedaling Huckabee: “Really not that aware” of issue at the time, concerned about Ark. rice growers.

Update: Fla. House Speaker Rubio, endorsing Huckabee, sticks up for his man. “Since then however he has learned more about the Cuba issue….” Read his email message.

HALPERIN’S TAKE: 7 reasons why it is difficult for Huckabee’s Republican rivals to stop him.