Thanks for following our live coverage of the seventh debate of the Democratic primary season.

The debate in Iowa featured six of the remaining 12 candidates, and came just three weeks before Iowa voters go to the polls to select their Democratic candidate.

Progressive senators Elizabeth Warren and Bernie Sanders appeared to finally break what had been an informal truce, as they clashed over claims Sanders doubted the electablity of any female US presidential candidate.

Warren argued that she and the only other woman on stage - Amy Klobuchar - had a better track record of winning office than the men on stage, who she said had lost 10 elections between them.

Read the full time analysis from Anthony Zurcher in Iowa:

Bernie Sanders and Elizabeth Warren ramp up feud