Absolutely unhappy

Ron Brownstein looks at those progressives unhappy with the Senate right now.
The broad mass of college-educated white voters are an increasingly central component of the Democratic coalition. But it remains a challenge for the party to manage the expectations of that community's most liberal segments because they tend to see politics less as a means of tangibly improving their own lives than as an opportunity to make a statement about the kind of society they want America to be. That is not a perspective that encourages compromise or pragmatism.