Sunlight Foundation’s latest on political ad spending–Koch-aligned groups are everywhere. 

“Today’s the day a little-known rule by the Federal Communications Commission takes effect for every TV station in the country. In a nutshell, it requires broadcasters that run political ads to disclose who paid for them.

"It may sound like a simple idea. But it could have tremendous effects on the way campaigns compete and spend money — not to mention for third-party groups and members of the general public who are interested in campaign finance, too.”