Claim: Dark money' spending" in the 2016 election cycle "is 10 times what it was at the same point in the 2012 election cycle," when it topped $308 million.
Fact-check: Ten times more 'dark money' has been spent for 2016 elections, U.S. Sen. Tammy Baldwin says 
Verdict: true
Organisation: PolitiFact
Author: Tom Kertscher
Date published: 2015-11-05T00:00:00