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"As a matter of pure uncontested fact, there has been more super PAC money spent thus far in express support of the Sanders campaign than for either one of his Democratic rivals. Let that sink in. That includes, by the way, former Secretary of State Hillary Rodham Clinton according to Federal Election Commission (FEC) records."
http://www.politicususa.com/2016/02/01/bernie-sanders-super-pac-money-democratic-rivals.html
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"In fact, more super PAC money has been spent so far in express support of Mr. Sanders than for either of his Democratic rivals, including Hillary Clinton, according to Federal Election Commission records."
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"Sanders drops line attacking super PACs from speech after super PAC backs him "
