 Campaign shakeups reached the top level on July 10, 2007, when campaign manager Terry Nelson and campaign chief strategist John Weaver both departed.Another senior aide and co-author of McCain's books, Mark Salter, reduced his role in the campaign as well (he would later return to a full role).McCain's co-chair for his Florida campaign, State Rep Bob Allen, was arrested on July 11, 2007, on charges of sexual solicitation (prostitution).