Further to my question about the meaning of ‘If you must know’ in Washington Post’s article (http://www.politico.com/news/stories/0211/49417.html#ixzz1DswY7D3M) on CPAC conference which I posted this morning in the forum, I stumbled on a word, ‘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 ‘The Sarah Palin impersonator’ is not ‘impersonators.’ As long as the impersonator is in singular form, who is very Sarah Palin impersonator?- which is not clear from the text.

Could you explain me who he or she is the Sarah Palin impersonator?

“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.”