“The surprisingly decisive result left Sanders, a candidate who prides himself on his pile-driver-like consistency, facing a new challenge: finding a second act that can appeal to voters beyond the fervid base he has established. The evening’s clearest message was that while the senator from Vermont has inspired a passionate depth of support, the breadth of his coalition remains too limited to win the nomination.”

“Sanders reached 33% or more of the vote in just five of the 14 states that voted (including his home state of Vermont) and did not exceed 36%, his share in Colorado. Biden had a higher ceiling: He won at least 39% in seven states and roughly a third of the vote in three others.”

Said pollster Stan Greenberg: “Sanders has made no effort to reach out beyond his voters, his movement, his revolution. It just has not grown. It is an utterly stable vote that is grounded in the very liberal portion of the Democratic Party, but he’s so disdainful of any outreach beyond that base. He seems content to just keep hitting that drum.”