Cal Jillson, political scientist at SMU's Dedman College of Science and Humanities, talks about how Perry's brain blip might affect his campaign.

By Dave Montgomery and Aman Batheja

AUSTIN -- Gov. Rick Perry and his campaign went into damage-control mode Thursday as Perry vowed to put an epic debate gaffe behind him and return to his core message of job creation and limited government.

Making the rounds on the morning shows, the one-time frontrunner for the Republican nomination dismissed speculation that his brain freeze in a Wednesday night Republican debate would drive him out of the race. ...

Cal Jillson, a political science professor at Southern Methodist University in Dallas, said: "You rarely see a senior accomplished politician go completely blank. ... I don't think he will be taken seriously as a candidate for president going forward."

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