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Peter Stone – Koch brothers convene donor retreat as dark money spending set to soar

The billionaire Koch brothers are set to convene one of their famed retreats this weekend for several hundred of their fellow super-rich conservatives in Palm Springs, California, as observers forecast a record year for secret donations, dubbed dark money, to Koch-backed groups and other outfits from the NRA to the League of Conservation Voters. “Given the trends we’re seeing, we wouldn’t be …