Only New Jersey Gov. Chris Christie knows whether or not he will eventually enter the 2012 Republican primary. And even he may not know yet. But if he does decided to get in, as long as he does well in debates, he will have plenty of time unseat current front-runner Mitt Romney.

Just look at the results of the latest Fox News poll that was released last night. A month ago Texas Gov. Rick Perry lead the field with 29%, followed by Romney at 22%, and Rep. Michele Bachmann, R-Minn., at 8%. The current Fox poll now has Romney at 23%, Perry at 19%, and Bachmann, now in 7th, at 3%. What happened? Did Perry fall because his organization in Iowa failed to score as many county chair endorsements as Romney? No. Perry’s numbers have slipped because of three straight poor debate performances.