Barack Obama: “If they can upset Hillary Clinton, and win in Iowa, that really will help them propel them to the next stop, which is…”

This race is going to be close. It could determine which party controls the Senate and whether Ohioans can count on the people in Washington to be fighting for you.

I think when we act on that basis, it doesn't always work out, but over time things do get better.

I’m going to insist that we can do better than we’re doing right now.

When we choose, when we make that decision, I do believe – and there is evidence for this – that the world gets incrementally better, and that is a worthy goal and it’s worth fighting for.