Clinton has about 23 times as many superdelegates as Sanders does, according to a new survey from the AP. And she's picked up far more than Sanders even after his big New Hampshire victory.
NPR's Robert Siegel talks with Wisconsin Sen. Ron Johnson. The Republican senator, who is running for re-election this year, said on Sunday we should wait for the next elected president to choose Justice Antonin Scalia's replacement. He has since switched his position, now willing to vote on Obama's Supreme Court nominee.
Marco Rubio had a rollercoaster through the first two presidential contests in Iowa and New Hampshire. He's looking for momentum in South Carolina and landed the endorsement of Gov. Nikki Haley.
Pope Francis was criticizing Republican presidential candidate Donald Trump's plan to build a wall on the U.S.-Mexico border. Trump called the comment "disgraceful."
Military voters are a key block in South Carolina's Republican primary. Many candidates are catering to them, trying to show they have what it takes to be commander-in-chief.
Priorities USA Action seemed to be waiting for the general election before spending seriously in support of Hillary Clinton. But that has changed now that she is in a real battle to win the primary.
In the wake of Antonin Scalia's death, Patrick Leahy of Vermont, the Senate Judiciary Committee's ranking Democrat, argues that President Obama should be the one to nominate Scalia's replacement.
On Saturday, Democrats in Nevada will choose between Bernie Sanders and Hillary Clinton in what has been dubbed the "First in the West" caucuses. Clinton once had a large lead, but not anymore.