McCain had fundraising problems in the first half of 2007, due in part to his support for the Comprehensive Immigration Reform Act of 2007, which was unpopular among the Republican base electorate. Large-scale campaign staff downsizing took place in early July, but McCain said that he was not considering dropping out of the race. Later that month, the candidate's campaign manager and campaign chief strategist both departed. McCain slumped badly in national polls, often running third or fourth with 15 percent or less support.