Mystery donor gave $13.5 million to 'dark money' group supporting Marco Rubio
A single, unnamed donor gave $13.5 million to a "dark money" nonprofit supporting Marco Rubio's presidential campaign -- and his or her identify may forever be a secret.
The donation was revealed in a tax document obtained by the Center for Responsive Politics, which unpacked how the money went to consultants with close ties to the Florida Republican, despite the Conservative Solution Project's supposed independence.
Immediate speculation focused on Norman Braman, who poured millions into a super PAC supporting Rubio. At the same time, Rubio had the backing of a number of wealthy GOP donors, some known and some who may have prefered to stay in the shadows.
Read the report here.