It doesn't matter what Trump said to the Ukrainian president. What matters is that this scandal finally convinced Democrats to begin impeachment.

If Republicans want to weaponize every appearance of corruption, there's a simple way to disarm them.

Some candidates seem to believe that their past support for marriage equality is enough to win the community's support.

In a "summer slump," the California senator hopes more time on the trail will help her campaign. Having a stronger message might help, too.

The former vice president is a dealmaker, not a deep thinker.

Guardians of civility are shocked when, at a Democratic debate, a debate occurs.

They aren't meant to gin up scathing attacks and YouTube moments. They're supposed to give voters a chance to get comfortable with the candidates.

While most attention was focused on Biden, Warren, and Sanders, candidates at the ends of the stage brought big energy—and big ideas.

The Democratic debate reveals that the vice president has only a shaky grasp on his competitors' plans—as well as his own.

Joe Biden isn't the only candidate who wants to have it both ways, appealing to big donors and campaign-finance reformers alike.

Baby Boomers are charmed by his rose-tinted revisionism. Younger Democrats see the past more clearly.

CNN's town hall on climate change was a good show. But it wasn't what the presidential race needs.

The media are chumming the waters for a takedown of the senator in the next Democratic debate. The candidates shouldn't take the bait.

The Democrat still shines in most polls, but as a Trump loss grows more likely, the former V.P.'s "electability" pitch is losing its luster.

Joe Biden set the stage for Donald Trump's racial scapegoating. Why can't he admit that he was wrong?

Biden seems to believe that everything in America was rosy until Trump took office, and he's offering himself as a time machine.

He and several other candidates have issued plans that appear ambitious only because America's system is so broken.

Running as the inheritor of Obama's legacy, the former vice president offers a health care plan that lacks audacity and offers little hope.

Joe Biden hoped to guard his frontrunner status and stay above the 2020 campaign fray. Now he'll have to run to keep up with the pack.

The 2020 presidential candidate raised a mountain of money last quarter, and a lot of it came from Silicon Valley.