Joe Biden laid it on the line today at a fundraising event in Arizona:
It’s not that Republicans are bad guys. This is just the bet they’ve made. They’re going to put their chips on movement in the 35 seats in the House that have been traditionally Republican districts and trying to take them back. If they take them back, this is the end of the road for what Barack and I are trying to do. This is their one shot. If they don’t break the back of our effort in this upcoming election, you’re going to see the things we said we’re for happen.