2016 Postmortem

Partially because there's so much unknown with non-existant polling plus the open primary aspect if I recall.

While the hardcore Sanders supporters are going to do the right thing and phone bank and work hard to get out there, I know based on past experience that the momentum is on the Clinton side. Perception is 9/10th's of the game in politics and while she's had to fight to win this nomination, the fact that she's continually in the lead here and coming out big in states people notice (really, nobody notices Wyoming for a range of reasons and caucus states even less), and she has the perception of having momentum and winning.

That alone will draw undecideds more than any issue, policy, or indictment wet dream some may have. A lot of undecideds just want to pick the winning side.