Detailed text transcripts for TV channel - CNN - 20170218:02:21:00
Score cards for ideological purity and their influence extends from the white house to the state house. joining me now is jane mayor, author of a terrific book. dark money, the hidden history of the billionaires behind the rise of the radical right. define "dark money". >> that's the kind of money that you can't trace. it's money that comes from donors hiding their hands. the public can't see where it's coming from and goes into the groups not be political, and supposed to be social welfare groups but in fact, they air all kinds of vicious ads and are very active in campaigns and this blossoms...