“According to Fox, about 10,000 present, but just 2400 voted.”
Just found a CNN article that said the same thing, and the pdf document summarizing the CPAC votes also said 2400 voted. This is NOT a representative sample of CPAC.
(1,558 votes cast): Romney 35%
McCain 34%
Huckabee 12
Paul 12
Undecided 5
Other 1
Looks like a bigger turnout than in 08...