If there is a large voter turnout, not only do we retain the White House, but I think we regain the Senate. We win governors' chairs up and down the line. So I believe if you want to retain the White House, if you want to see Democrats do well across the board, I think our campaign is the one that creates the large voter turnout and helps us win.

At a time when our planet is warming due to climate change, the last thing our environment needs is more drilling. What we need is for Congress and the White House to move toward clean energy such as solar, wind and geothermal.

You need a Democratic Party which is a grassroots party, which makes decisions from the bottom on up, not just from the top on down.

High-speed trains in Japan can now reach 375 mph - twice as fast as any public transit train in the United States. America's railroads were once the envy of the world. Today they are in disrepair and we are falling further and further behind the rest of the world. We need to rebuild our crumbling infrastructure, including rail. When we do that we not only make our country more productive and efficient, we create millions of new jobs.

The American people must make a fundamental decision. Do we continue the 40-year decline of our middle class and the growing gap between the very rich and everyone else, or do we fight for a progressive economic agenda that creates jobs, raises wages, protects the environment and provides health care for all?

It's no great secret, number one, in my view, and I think the view of most Americans, that Congress itself is pretty dysfunctional. We are not addressing the real needs of the American people. And second of all, philosophically, there is a huge division between the House and the Senate.

I'm not much into speculation.