MIAMI BEACH, Florida (AP) — Jeb Bush's super PAC is raising eye-popping sums in a multi-pronged effort to define the former Florida governor for Republican presidential primary voters before his rivals can, donors say. Ever mindful of the public's supposed aversion to political dynasties, Bush's team sees it as a priority to cast the brother and son of former presidents as his own man, several who attended the meeting said. The meeting, with a rooftop cocktail party at a luxury seaside hotel, was a way for Bush to thank his most generous contributors, who have helped him sprint through the first months of the year in fundraising as he prepared for an expected candidacy for the nomination. Kunkler said the super PAC's financial disclosure in July would be a "wowza" moment, and others have said they expect Bush to post a figure multiple times the amount collected by rivals. With the aggressive super PAC approach, Bush is at the forefront of a shift in presidential politics made possible by a 2010 Supreme Court decision allowing these organizations to raise unlimited sums from individuals and groups such as corporations and labor unions.