Does Warren Have Room to Grow?

Nate Cohn: “Elizabeth Warren is gaining. She has breached 20 percent of the vote in recent national surveys and might hold a narrow lead in Iowa and New Hampshire. The prediction markets now consider her a clear favorite to win the nomination. It can be hard to see how her Democratic rivals will attack or stop her.”

“But the challenge facing Ms. Warren, if past primaries are any indication, isn’t those rivals. It is whether she will hit a wall: the rank and file of the Democratic primary electorate.”