Clinton's lead
I don't post this to be negative about Sanders (as I've said repeatedly, I like him), but to point out some math that makes sense to me:
"For Bernie to win, he has to prove he can win majorities beyond the angry white male demographic. He has consistently and massively outspent Hillary in diverse states, but has failed to dent her lead among those groups. Until that changes, the outcome of this primary is not in doubt."
https://medium.com/@DmitriMehlhorn/no-bernie-did-not-gain-ground-on-super-saturday-3c3dab5fdd70#.amxim2avv
"For Bernie to win, he has to prove he can win majorities beyond the angry white male demographic. He has consistently and massively outspent Hillary in diverse states, but has failed to dent her lead among those groups. Until that changes, the outcome of this primary is not in doubt."
https://medium.com/@DmitriMehlhorn/no-bernie-did-not-gain-ground-on-super-saturday-3c3dab5fdd70#.amxim2avv