U.S. Sens. Elizabeth Warren and Bernie Sanders attempted over the weekend to tamp down a weeklong disagreement over whether Sanders told Warren in a 2018 private meeting that a woman could not beat Republican President Donald Trump in 2020.

As the two senators and long-time allies campaigned in the early-voting states of Iowa and New Hampshire just two weeks before the first caucuses begin, both largely stuck to their liberal policy platforms and emphasized unity among Democrats hoping to take on Trump in the November election.

"Bernie and I have been friends a long time. We fight for the same issues," Warren said at a house party in Des Moines, Iowa, on Saturday, when quizzed by a supporter who said she believed Warren's side of the story. "That's all I want to say about that topic because what I truly believe is we're going to have to pull together."