"There's no limit on money donated to super PACs, and that seems likely to give Republicans an overall edge. Bushs super PAC raised $103 million in the first half of the 2015, or 9 times as much as his campaign. Several super PACs supporting Cruz have raised roughly $40 million from a handful of rich donors. Rubios super PAC raised a modest $16 million through June, but it could make up lost ground by gaining some of the donors who backed Scott Walker until he exited the race last month.
Hillary Clintons super PAC, meanwhile, has underperformed. It pulled in just $15.6 million through June, putting her outside-funding war chest behind the top three Republican candidates. Super PACs dont have to file their next set of funding reports until the end of January, so that money race could look significantly different by the time we see the latest numbers.
None of that will affect Bernie Sanders, who has rejected the idea of forming a super PAC or raising money in big chunks from rich donors. So hell remain an underdog no matter how much money his campaign raises. Which seems to suit him fine."