CEDAR RAPIDS, Iowa — Elizabeth Warren's final pitch to Iowa Democrats ahead of Monday's opening primary contest includes a swing at left-wing rival Bernie Sanders.

"I've been building a campaign from the beginning that's not a campaign that's narrow," Warren, 70, said Saturday. "Not a campaign that says, 'It's us and nobody else. It's a campaign that says, 'Come on in,' because we are in this fight together. This fight is our fight."

Just shy of a year since her first trip to Iowa as a 2020 Democratic presidential candidate, Warren is dashing around the first-in-the-nation state this weekend after being stuck in Washington, D.C., as a juror in President Trump's impeachment trial.

Once a leading contender for her party's nomination, the Massachusetts senator's polling numbers slipped as she lost momentum to Sanders, her Senate colleague from Vermont who was initially an ideological ally.

But Warren and Sanders, whose slogan is "Not me, us," clashed this month after she claimed he told her during a 2018 private meeting he didn't believe a woman could win the White House.

Sanders's camp also faced criticism on Friday after top supporter Rep. Rashida Tlaib of Michigan booed Hillary Clinton during a rally in Clive, Iowa, reopening wounds from the 2016 primary.

On Saturday, the former Harvard Law School professor pushed the notion that her campaign was one of breadth, having been joined by supporters and staff of failed candidates Cory Booker, Julian Castro, Kirsten Gillibrand, and Kamala Harris.

Warren, changing up her stump speech, began Saturday by thanking Iowans for coming out to hear her vision for the country and asking questions about how she plans to turn her blueprint into reality since announcing her candidacy.

"I've heard from you. You've pressed notes into my hand. You've whispered dreams into my ears. You've told me about your lives, about issues, about ideas, about how we could make things better. In this year, you have made me a better candidate, and you will make me a better president," the senator said.

Warren, however, concluded with her argument that she was the one who could unite Democrats of all persuasions around their common goal.

"We're down to the final strokes here but understand: We will, we must come together as a party and beat Donald Trump," she added.