Dark money groups are pouring millions into campaigns without reporting where it came from. And it's all legal!
Political nonprofits are not required to disclose their donors.
According to the Center for Responsive Politics, Patrick Murphy is the "top target" of dark money in Florida.
The conservative non-profit "American Future Fund" paid for the ad questioning Murphy's resume
It's the most aired political ad in Tampa. It's aired 384 times since July. They've spent $1.9 million attacking Patrick Murphy. That's more than any other candidate.
Who's the top "dark money" spender?
The U-S Chamber of Commerce. It may sound official, but it's actually a conservative pro-business group that's spent a whopping $23 million this year, more than the next three groups combined.
Donald trump is the biggest national target of dark money. $9.7 million in secret money has been spent attacking his campaign.
"Club for Growth", a conservative non-profit is one of the leading Dark Money groups against Trump.
We followed the money and found a packing company in Wisconsin called "Uline" is the top contributor to "Club for Growth." Uline has contributed $3.2 million.
There's a Tampa Bay connection to dark money. Arkansas-based investment bank "Stephens Inc.", which has an office in St. Petersburg, has contributed $2.7 million to "Club for Growth."