Tonight’s Republican presidential debate in Tampa, Florida is likely to focus on the burgeoning fight between the two frontrunners: Texas Gov. Rick Perry and former Massachusetts governor Mitt Romney.

It’s the second time in five days the two men will share a debate stage and if past is prologue expect them to duel over Perry’s assertion that Social Security amounts to a “Ponzi scheme”.

In today’s episode of the “Fast Fix” we offer our video preview of how that scrap might shake out. Don’t forget to tune into The Fix tonight for our live-blog of the debate.