Rasmussen has Thompson 27, Rudy 23, Romney 12, McCain 11.

But the latest Cook/RT finds completely different results:

But in the most recent survey of the four, Giuliani (22 percent) and McCain (21 percent) were virtually even at the top, as were Thompson (14 percent) and Romney (12 percent) one level back… The combined sample of Republicans and GOP leaners has a 2.6-point error margin.