There is little doubt of the continued fluidity within the GOP field, and Iowa — as home to fiscal and social conservatives searching for an ideal candidate — remains one of the best places (if not the best) to ride the roller coaster of the 2012 Republican nomination and presidential election. Our 14th edition of the GOP Power Rankings is compiled in the same way as our first was in March. We rely on the opinions and predictions of Iowans — academics, grassroots activists, political reporters and consultants.