Yep. Ras is a VERY GOOD ONE. HERE IS THE LINK: http://rasmussenreports.com/public_content/politics/election_20082/2008_presidential_election/florida/election_2008_florida_republican_primary Looks like Mitt is running off with it.
~”Is this reasonably reliable/authoritative?”~
Rasmussen has one of the better track records. It’s ARG you can ignore.