The defeat of Hillary Clinton, an experienced Washington politician who sought common ground with Republicans, could make it more likely that the party will turn to its liberal wing as it grapples with its future.  That's best represented by Vermont Sen. Bernie Sanders, whom Clinton defeated in a long primary, and Massachusetts Sen. Elizabeth Warren, a pull-no-punches progressive darling. 

Bernie Sanders says he's prepared to work with Donald Trump to help the working class, but will "vigorously oppose" other policies promised by the president-elect. 

The independent Vermont senator has released a statement noting Trump "tapped into the anger of a declining middle class that is sick and tired of establishment economics, establishment politics and the establishment media." 

He says that if Trump "is serious about pursuing policies that improve the lives of working families in this country, I and other progressives are prepared to work with him." 

But Sanders adds that if Trump "pursues racist, sexist, xenophobic and anti-environment policies, we will vigorously oppose him."