Obama calls Trump 'wannabe king' at Harris event

Gov. Tim Walz told organizers and volunteers at Duke University on Thursday that their youth vote in the battleground state could make a difference for "generations to come."

"What a privilege to be in this moment," he said. "They are going to write about Americans who stood up in this moment and said "hell no" to this, the tendencies of totalitarianism, and the division and racism, the hatred, the misogyny, everything else that goes with that. You're going to get asked, 'When you're my age, what did you do?' And your answer is, 'I did every damn thing possible.'"

Walz's message seemed more urgent than usual, with just 12 days until the election.

At first, Walz said he didn't want to put "fear" in the students. But he later asserted, while highlighting Trump's "enemy from within" remarks, that the former president would come for any of his political enemies.

"I'm on the top of his list, but don't kid yourself, you're somewhere on that list, too, if you disagree with these people," Walz said.

-ABC News' Isabella Murray

Speaking briefly to reporters in Philadelphia, Harris criticized Trump for not participating in Wednesday's CNN town hall, which had been the scheduled date for a second debate between the two candidates.

"Yet again, Trump not showing up, refused to be a part of a CNN debate, and clearly his staff has been saying he's exhausted," Harris said. "And the sad part about that is, he's trying to president of the United States, probably the toughest job in the world, and he's exhausted."

Harris also touted two recent endorsements from Republicans: former Congressman Fred Upton of Michigan and Shawn Reilly, the mayor of Waukesha, Wisconsin.

“This continues to be, I think, evidence of the fact that people who have been leaders in our country, regardless of their political party, understand what’s at stake. And they are weighing in -- courageously, in many cases -- in support of what we need to have, which is a president of the United States who understands the obligation to uphold the Constitution of the United States and our democracy,” she said.

-ABC News' Will McDuffie

Wisconsin Democratic Party chair Ben Wikler said he views Green Party candidate Jill Stein as a real threat.

His team is working with the Democratic National Committee on ads calling her a potential spoiler for Trump. Stein is running almost exclusively on an anti-war, pro-Palestinian platform this cycle.

Wisconsin will have a packed ballot -- Stein, Cornel West, Chase Oliver and Robert F. Kennedy Jr. -- will appear on the ballot. RFK Jr. is still fighting to have his name removed, but the latest court ruling keeps it on.

-ABC News' MaryAlice Parks

Democrats in the swing state of Wisconsin are preparing for a recount.

The threshold for a candidate to request a recount there is a 1% vote margin. In 2020, the race was significantly closer than that.

The 2020 recount, which increased President Joe Biden's lead over Trump, was not wrapped up until Nov. 29, but the campaign believes it will be done much quicker this time.

Party chairman Ben Wikler referred to his state as "tossup city," and said, "If every person who cares about Harris winning does everything they can between now and Election Day, we will be OK."

The party says it needs only to win the same number of votes it did in 2020.

-ABC News' MaryAlice Parks