Democrats seeking to oust President Trump in 2020 largely skirted mentions of him in a low-key debate whose most impassioned moments included Bernie Sanders and Elizabeth Warren clashing over her claims that he said a woman can’t be elected president.

In a six-person debate in Des Moines, Iowa, less than three weeks before the state’s kickoff caucuses on Feb. 3, Warren insisted her senatorial colleague asserted in a 2018 meeting that a female candidate couldn’t claim the White House.

While Warren, 70, and Sanders, 78, didn’t get angry or show outward hostility, as many predicted, the tension was palpable.

“Well, as a matter of fact, I didn’t say it. Anybody who knows me knows that it’s incomprehensible that I do not believe a woman could not become president of the United States,” Sanders said. “This is what Donald Trump and some of the media want.”