Asma Khalid

Six Democratic presidential candidates will participate in the last debate before the Iowa caucuses Tuesday night in Des Moines, as the campaign has gotten more combative among top contenders.

Across the country, dozens of counties voted for President Obama and then in 2016 elected President Trump. In Iowa, almost one-third of the state's counties flipped from Obama to Trump.

New Jersey Sen. Cory Booker has suspended his presidential campaign. Though a stirring speaker, he failed to translate that into success in polls.

New Jersey Sen. Corey Booker is the latest candidate to drop out of the Democratic presidential race. Booker did not qualify for Tuesday's debate in Iowa, the second straight debate he's missed.

Iowans say he's charismatic, but polls suggest they're not willing to caucus for him. Why has the New Jersey senator not taken off in the Democratic presidential primary?

As a late entrant in the Democratic presidential primary, Michael Bloomberg is not campaigning in the first primary states and is instead marshaling his billions of dollars into advertising.

President Trump downplayed North Korea's threat of a "Christmas present" if the U.S. doesn't roll back economic sanctions by the end of the year. Also, Notre Dame won't hold a Christmas mass.

Part of Vermont Sen. Bernie Sanders' resiliency this campaign cycle is thanks to his popularity with Latinos. Multiple polls show Sanders leads the field with Latino support.

Part of Vermont Sen. Bernie Sanders' resiliency this campaign cycle is because of his popularity with Latinos. Polling indicates Sanders is the preferred candidate for a plurality of Latinos.

Three of the leading Democratic 2020 candidates visited the culinary workers union in Las Vegas this week. It's a testament to the group's political clout in Nevada.

The presidential candidate's political identity was forged in Texas. The ideas she espouses about the danger of a shrinking middle class come from her years of bankruptcy research as a law professor.

The Democratic Party faces the prospect of a debate in two weeks with only white candidates onstage. Earlier, they had the most diverse presidential candidate field in history.

Sen. Kamala Harris' exit from the 2020 race leaves Democrats with the prospect of an all-white debate stage, and questions about what that lack of diversity means to the party's voters.

The California senator entered with high expectations and took off after a blockbuster debate showdown with Joe Biden. But her support and funding fell in recent months.

As a college student, the 2020 presidential candidate was deeply frustrated with the Democratic Party during George W. Bush's presidency. He joined friends to redefine party values in bolder terms.

Some seeds of Pete Buttigieg's pursuit of the White House were planted after the 2004 election, when Democrats were at a low point with the reelection of George W. Bush.

Joe Biden holds a firm position in the Democratic primary with overwhelming support among black voters. While traveling to Atlanta for this week's debate, his rivals tried to challenge that strength.

Ten Democratic presidential candidates took to the debate stage Wednesday night in Atlanta — attempting to outline the policies they believe separate them from the rest of the field.

Democrats will debate Wednesday night in the midst of an impeachment inquiry, and with a field in flux after Pete Buttigieg's recent surge.

Less than three months before voters start casting ballots, Deval Patrick is officially joining the 2020 Democratic presidential race. His message announcing his candidacy was largely about unity.