Tuesday night's group was the smallest and least diverse yet, with six white candidates. It's the last debate before the Iowa caucuses.

We asked: “If you could tackle one issue during your presidency, what would it be?” Here’s what they said.

The New Jersey senator talked about his plans for criminal justice reform (and that time he saved someone from a burning building) as he made his 2020 presidential run.

Despite the debate coming after a chaotic news week and just before the holidays, the night proved to be the strongest yet for some of the group, with intense but substantive exchanges and plenty of jokes.

The California senator would have been the first woman of color to land the nomination for president.

As a fiscal and economic conservative with a plan for tackling the climate crisis, Weld is campaigning to secure the Republican nomination against Trump.

The former Texas Congressman gets real about money in politics and having no regrets about running for president.

Billionaire presidential candidate Tom Steyer has led the biggest campaign to impeach Trump, rejects right-wing claims to patriotism or Godliness, and is an unapologetic fan of Rihanna’s “Rude Boy.

“I bring something very different to the equation”—Mayor Bill de Blasio addressed accusations of donor conflicts of interest, the type of Trump investigation he’d like to see, and the discrimination he’s faced in an interracial relationship.

“May the best woman win.

Seth Moulton says he’s the only candidate in the race who receives single-payer health care, but the veteran still believes that a Medicare for All should compete with private insurers on the open market.

“There’s really no reason for the federal gov’t to be involved in education except for the civil rights component.