Washington (CNN) Six presidential candidates will face off Tuesday night at the last Democratic debate before the first votes are cast in the 2020 election.

CNN, in partnership with The Des Moines Register, is hosting the seventh primary debate at Drake University in Des Moines, Iowa.

The debate will be the final face-to-face gathering of the candidates before the February 3 Iowa caucuses. Six candidates are set to appear: former Vice President Joe Biden, former South Bend, Indiana, Mayor Pete Buttigieg, Minnesota Sen. Amy Klobuchar, Vermont Sen. Bernie Sanders, businessman Tom Steyer and Massachusetts Sen. Elizabeth Warren.

The debate is the first meeting of the candidates since Iran fired more than a dozen ballistic missiles at two Iraqi military bases housing US troops. The attack last week was retaliation after Iran's top general Qasem Soleimani was killed in a US airstrike in Baghdad. The debate will provide an opportunity for the candidates to focus on foreign policy as they make their presidential case to the American people.

What time is the debate?

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