Winning progressive votes could be a challenge for Sen. Amy Klobuchar

A few hours after Sen. Amy Klobuchar joined the Democratic presidential race, Our Revolution Minnesota endorsed Sen. Bernie Sanders. A day earlier, the national Progressive Change Campaign Committee said it's backing Sen. Elizabeth Warren.

The moves underscored a key question for the Minnesota senator's White House campaign: Is she progressive enough to win the nomination at a time when the party's most liberal wing is ascendant?

http://www.startribune.com/winning-progressive-votes-could-be-a-challenge-for-klobuchar/505687862/