One of the hardest decisions for any candidate to make is whether to drop out of a race. It's even harder for the Vermont senator, who, at 78, likely wouldn't run for president again.

Days after the House formalized its impeachment inquiry into President Trump, Russian hackers reportedly started working to gain access to Ukrainian energy company Burisma Holding's email accounts.

The field of Democratic presidential hopefuls has begun to shrink in advance of, and because of, this week's debate. The new, more rigorous rules instituted by the party are causing some controversy.

The Democratic National Committee released new qualification standards for its first post-Labor Day debate. Candidates will need higher poll numbers and more grassroots donors.

Rep. Chris Collins was indicted on insider trading charges in August and suspended his campaign. Now he is running again, saying "the stakes are too high" to allow a Democrat to win.

In its first statement on the allegations against Rep. Keith Ellison, the national Democratic Party says, "All allegations of domestic abuse are disturbing and should be taken seriously."

WikiLeaks is meting out a trove of hacked emails from Clinton campaign chairman John Podesta. The latest release includes commentary on Catholicism and risotto.

Trump has been seizing on the turmoil at the DNC as a talking point on the campaign trail.

Finally, many party operatives felt, the big wheels of Hillary Clinton's juggernaut would mesh and roll forward together. But another story about emails emerged to steal the storyline.

Thanks to the way Democrats pick their nominees — and despite her whopping 20-plus-point loss to Bernie Sanders — Clinton looks like she could wind up with the most delegates out of New Hampshire.