I think that paul could be leading in the midwest, and some in the south, and west
Well, Rubio's still ahead nationally, so Paul should only be leading in a minority of states. Maybe Christie leads throughout the Northeast (+maybe California?), Paul leads in much of the West, and Rubio leads in most of the Midwest and South. Paul of course leads in Kentucky, but not sure about the rest of Appalachia. I guess PPP is polling Colorado next, and that should be interesting. It's the first Western state they will have done (if you don't count Alaska).
Paul's favorability is slightly higher than Rubio's, so he may be taking over the national lead soon. With Rubio's unpopular immigration push, it may quicken the lead change.