Further to my question about the meaning of "If you must know" in Washington Post’s article on CPAC conference which I posted this morning in the forum, I stumbled on a phrase: the Sarah Palin impersonator.

According to the article, the votes resulted in Texas Rep. Ron Paul coming up in the 1st place, and former Massachusetts Gov. Mitt Romney in the 2nd place. That said, why Sarah Palin impersonator is not impersonators. As long as the impersonator is in singular form, who is very Sarah Palin impersonator? It can be simply many republicans who are followers of Sara Palin's credos and her action patterns. But in that case, inpersonator should be in plural form. Am I wrong?

Could you explain who the Sarah Palin impersonator is?

The Conservative Political Action Conference is over. The thousands of activists who converged on northwest Washington have begun returning home. The Sarah Palin impersonator has left the building.