All three Democratic presidential candidates are expected to attend an extra debate in New Hampshire, just days ahead of the state's first-in-the-nation primary, according to debate host MSNBC.

The cable television network announced the details of the Democratic debate Sunday, after nearly a week of infighting among the campaigns over whether more debates should be added to the packed primary schedule.

The forum will convene on Thursday, Feb. 4 at Durham's University of New Hampshire, starting at 9 p.m. ET. NBC News host Chuck Todd and MSNBC anchor Rachel Maddow will moderate the debate.

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Earlier this week, the Sanders and Clinton campaigns consented to add three more debates to the primary calendar, in addition to the Feb. 4 forum in New Hampshire.

On Sunday, the Democratic National Committee (DNC) agreed to sanctioning the additional primary debates.

"Our Democratic candidates have agreed in principle to having the DNC sanction and manage additional debates in our primary schedule, inclusive of New Hampshire this week," DNC Chair Rep. Debbie Wasserman Schultz said in a statement Sunday. "However, absent agreement on the details, we will give our campaigns the space to focus on the important work of engaging caucus goers in Iowa."

The committee plans to "reconvene negotiations and finalize the schedule" with campaigns by Tuesday morning, after the first nominating contests in Iowa wrap up.

New Hampshire residents will vote in the state primary on Feb. 9.