Election security updates: Officials brace for Election Day under cloud of threats

JD Vance addressed voters in Wisconsin during a rally in La Crosse on Monday.

"Tomorrow is our last chance," Trump's running mate said. "Tomorrow is the big day when we are going to vote in very big numbers in the state of Wisconsin. We're going to vote for change. We're going to vote for American prosperity."

Minnesota Gov. Tim Walz is also campaigning in Wisconsin on Monday. Vance called it "tough work" to "convince the American people" that Harris can be president.

"I think that's the toughest job in the United States of America," Vance said, saying Harris is "more of the same" high grocery prices, unaffordable housing and "wide open border."

The Alabama Republican Party announced on Monday it has launched its most comprehensive poll watcher deployment, with more than 400 poll watchers and election lawyers in Georgia and Alabama.

Over 200 Alabama poll watchers and dozens of election lawyers will be stationed in targeted districts across Alabama, which the party says is part of an effort to ensure a “secure and transparent election process.” The Alabama GOP added that the placement of election lawyers across the state "provides an extra layer of security and real-time responsiveness."

The Alabama GOP is also deploying more than 200 poll watchers to Georgia, supporting the critical southern battleground state on behalf of former President Donald Trump's campaign.

-ABC News' Beatrice Peterson

At a campaign rally Monday in Raleigh, former President Donald Trump urged his supporters to turn up to the polls on Election Day.

"If we get everybody out and vote, there's not a thing they can do," Trump told the crowd of North Carolinians, saying the state was "ours to lose."

Trump smeared the Democratic Party as a "horrendously dangerous party that's going to destroy our country."

"We cannot let that happen," he said. "So here's my only purpose in even being here today: Get out and vote."

Elon Musk was a no-show at the hearing over his $1 million voter sweepstakes in the Philadelphia County Court of Common Pleas on Monday.

Entering court without his client, Musk’s attorney, Chris Gober, criticized Philadelphia District Attorney Larry Krasner for wanting to "silence Elon Musk for supporting Donald Trump."

"We don't allow our rights to be trampled upon bipartisan agendas masquerading as legal arguments," Gober said.

In a late filing this morning, Krasner’s attorney continued to push for Musk to attend the hearing in person because his testimony would demonstrate "he is the beating heart of America PAC’s unlawful lottery and deceptive/unfair practices scheme."

"Musk cannot distract from his central role by saying that he wants to be busy out campaigning, rather than attending to his responsibilities to this Court," attorney John Summers said in the filing.

Earlier this morning, America PAC announced that the newest winner of their daily $1 million giveaway is a registered voter from Phoenix. One day remains until the sweepstakes ends on Election Day.

-ABC News' Peter Charalambous and Chris Boccia