The New York Times:

Sarah Palin is fortifying her small staff of advisers, buying a house in Arizona — where associates have said she could base a national campaign — and reviving her schedule of public appearances. The moves are the most concrete signals yet that Ms. Palin, the former governor of Alaska, is seriously weighing a Republican presidential bid.

Combine this with the movie that Dan mentioned yesterday, and it looks pretty likely that the thrilla from Wasilla is going to jump in.