The great unknown in this country is where this leaves the Republican Party after this election. Will it be the party of the Kochs or will it be the party of [Donald] Trump?

Donald Trump actually is a pretty big-government conservative. He doesn't see eye-to-eye with them [the Kochs] on trade.

The book that I wrote is called Dark Money, and it's about secret spending that is very hard to follow. [George] Soros's whole thing is about government transparency, so he spends very much in the open, and the same with [Tom] Steyer.

I would argue that there's been a backlash this year [2016]. They [the Kochs] pushed the [Republican] party too far right. The other thing that the backlash is against is the sense that politicians have been bought and sold.

[Tom] Steyer is specifically spending money on candidates who will take action against climate change.

So in a strange way, even though Trump is a billionaire, what he's been saying is, "Everything's rigged, it's all corrupt and I'm not corrupt because I'm my own billionaire." Both [Donald] Trump and Bernie Sanders made a lot of hay by making that argument.

The Kochs are very much involved in this election, not backing [Donald] Trump but backing everything down the ballot from him. They're pouring money into capturing the Senate and the House of Representatives, and state Houses across the country.