Scott Detrow

Former Massachusetts Gov. Deval Patrick is making a last-minute entry into the crowded Democratic presidential primary.

A source with direct knowledge of his decision tells NPR that Patrick has been making calls to Massachusetts and national elected officials and supporters to brief them on his plans and that he plans to formally enter the race as soon as Wednesday night.

Patrick's decision is about as last minute as it gets for a candidate who still wants to compete in the key early primary states: New Hampshire's filing deadline is Friday.

Updated at 7:35 p.m. ET

Former New York Mayor Michael Bloomberg is weighing a late entrance into the Democratic presidential primary, reversing course from this spring, when he said publicly that he would not run.

Massachusetts Sen. Elizabeth Warren has been calling for President Trump's impeachment since the spring. California Sen. Kamala Harris wasn't too far behind her. New Jersey Sen. Cory Booker's been pushing for it for months.

In fact, all six U.S. senators still running for president are backing the House's impeachment inquiry.

But now that the lawmakers may be getting what they want, many political operatives see it as a train wreck for their presidential campaigns.

Former Vice President Joe Biden appears to be ramping up his attacks on President Trump. Notably, he's also ramping up his defense of his own dealings in Ukraine.

Updated at 3:43 p.m. ET

Former Vice President Joe Biden called for President Trump's impeachment unless the White House complies with congressional requests for information about a call the president made to a Ukrainian leader.

"We have a president who believes there is no limit to his power," Biden said. "We have a president who believes he can do anything and get away with it. We have a president who believes he is above the law."

Updated at 1:50 p.m. ET

Friends, family, reporters and politicians gathered Saturday in downtown Washington, D.C., to remember journalist Cokie Roberts.

She was hailed as a "servant" of God and referred to as a "special singular soul" by those who delivered remarks.

Roberts died Tuesday at age 75 of complications from breast cancer. She had covered and commented on politics for NPR since 1978 and spent decades working for ABC News as well, including several years co-hosting the Sunday morning political show This Week.

Updated at 1:40 p.m. ET

Security concerns have prompted the Democratic National Committee to recommend nixing a plan that would have allowed Iowans and Nevadans to remotely caucus for candidates next year.

Supporters have long argued that "virtual caucuses" would open up Iowa's first-in-the-nation presidential contest, which requires caucusers to physically attend sometimes hours-long events to declare their choice for president.

Sens. Elizabeth Warren and Bernie Sanders are campaigning on "big structural change" and "political revolution." Former Vice President Joe Biden thinks voters will weigh the "soul of America" as they decide whom to support.

Sen. Kamala Harris is making a different bet.

The California senator's campaign is increasingly focused on economic challenges that, as she framed it at the Iowa State Fair this weekend, wake voters up in the middle of the night.

Before the first presidential debate last month, former Vice President Joe Biden's campaign signaled that he expected to be attacked by the candidates trailing him in the polls but that Biden would essentially ignore all incoming fire.

It was a classic front-runner approach. And it was punctured, hard and fast, by California Sen. Kamala Harris' attack on Biden's past opposition to federal busing policies.