The billionaire class fully understands what is at stake. That's why a handful of them are pouring hundreds of millions of dollars into the current elections. Their goal is not to strengthen the middle class, but continue the trend in which the rich are getting richer at the expense of everyone else.

Republicans win when people are demoralized and you have a small voter turnout, which by the way is why they love voter suppression. I believe that our campaign up to now has shown that we can create an enormous amount of enthusiasm from working people, from young people, who will get involved in the political process and which will drive us to a very large voter turnout.

It would, I think, be hard for anyone to make the case that the United States is a just society or anything close to a just society. In America today, there is massive injustice in terms of income and wealth inequality. Injustice is rampant.

The Affordable Care Act has clearly, as Secretary Clinton made the point, done a lot of good things, but, what it has not done is dealt with the fact we have 29 million people today who have zero health insurance, we have even more who are underinsured with large deductibles and copayments and prescription drug prices are off the wall.

People understand that the economy is rigged. They're working longer hours for low wages. All new income and wealth, almost all, is going to the people on top.

It is not good enough to say, "Well, hey, I vote every two years. I vote every four years." That's fine, but that is not good enough.

The basic issue of an American society which is fair, which is providing opportunity for all, is nowadays being replaced by the correct perception that we're living in a rigged economy - where it doesn't matter how hard you worked, the result will be all the income goes to the people at the very top. It's leading to a lot of frustration and anger, and people want some fundamental changes to the way we do economics and growth.