The real question is what will happen if Palin enters the race.
She clearly has the street cred over Bachmann, but Bachmann has a war chest and momentum.
It could hurt Perry as she would take more of the Fundie support away from him. It could help Romney as he could seem like the one moderate in a sea of Conservatives.
There would be a lot of press coverage for a while. Would make it hard for someone like Ryan to jump in.
Could look like more of the same, and make a Christie run viable, although I dont think he wants it.
In the end Palin would energize the Republican side. And if she was knocked out by Bachmann it might make a bachmann run...Viable?