When Massachusetts Democrat Elizabeth Warren and the rest of the 2013 class of liberal senators start work this month, they'll have to do more than figure out the byzantine ways of getting things done in Washington.

They'll also have to decide how seriously to engage a progressive movement that sees their assent a historic opportunity to shift the Democratic Party to the left.

Politico recently declared, "The Senate is about to become a liberal lion’s den." 

In 2012, groups like the Progressive Change Campaign Committee, MoveOn.org, CREDO Action, and Democracy for America worked hard to build progressive power in Congress. This week's iconic photo of Senators-elect Elizabeth Warren (D-MA) and Tammy Baldwin (D-WI) walking together down the corridors of power is symbolic of the rising progressive tide. 

Mayor Thomas M. Menino is expected to endorse Democrat Elizabeth Warren on Friday in her bid to unseat Republican US Senator Scott Brown, according to two people with knowledge of the plan.

It was a grim, sleety day in Chicopee, a gritty postindustrial town in western Massachusetts, where paint flakes off worn-out bridges and boarded-up factories. At a community relations luncheon, kind security guards were opening back doors and holding out umbrellas for the few willing to brave the freezing slush.

If you’re reading this, you probably already know how you feel about Elizabeth Warren. Warren is currently running for Senate in Massachusetts, in the hopes of knocking out Republican incumbent Scott Brown. Very few first-time candidates are so well-known, or so passionately beloved.

Backs MA Congressmen, Attorney General Coakley Calling on Federal Housing Finance Agency to Take Action To Prevent Unnecessary Foreclosures

BOSTON – It is past time for the Federal Housing Finance Agency (FHFA) to step up and help prevent unnecessary foreclosures in Massachusetts, said Consumer Advocate Elizabeth Warren, reinforcing calls from members of the Massachusetts Congressional delegation and Attorney General Martha Coakley.

Millions of Americans hoped President Obama would nominate Elizabeth Warren to head the consumer financial watchdog agency she had created. Instead, she was pushed aside. As Warren kicks off her run for Scott Brown’s Senate seat in Massachusetts, Suzanna Andrews charts the Harvard professor’s emergence as a champion of the beleaguered middle class, and her fight against a powerful alliance of bankers, lobbyists, and politicians.