I don't see how Bernie can make up in the polls unless he has
1. Strong showing in the debates
2. Revamps his communications strategy. You ain't running against Clinton and you aren't expanding your support.
3. Invest in ads going after Biden's record and contrast it with yours on Wall Street, Iraq, NAFTA, etc.
They have good grassroots support, energy and fundraising. But they are on amateur hour. It is striking how similar this is to 2016 strategy.
Warren on the other hand is going no holds barred highlighting her differences and she has a much more professional communications strategy. I'm starting to believe she is the one. She just has to get going on the fundraising front.