There’s going to come a point where Karl Rove concludes that his new group will do more to mobilize conservatives against the establishment Republicans it endorses than it will to mobilize centrist or casual GOP voters to support those candidates. With Palin, the Club for Growth, and conservative talk radio on the other side, he’ll likely have to stick to bluer states where there’s at least a chance that grassroots righties will give his candidates a pass in the primary on “electability” grounds. Maybe they’ll let him slide in, say, Colorado, Michigan, and Minnesota. Where else?

I’m curious to see if she takes a position on the Senate primary in Alaska. Joe Miller, whom she endorsed in 2010, might run; so might Sean Parnell, who served as her lieutenant governor and later succeeded her. That’s an easy call for Rove’s group given Miller’s tea-party cred but more complicated for her.