Tim Walz called on voters in battleground Wisconsin to vote for an "optimistic" future during a rally in La Crosse.

"This election could be won, quite literally, through the state of Wisconsin, and it could be won right here through La Crosse," Harris' running mate said. "That's how close this thing could be. So we're taking nothing for granted."

Walz addressed policies he and Harris will focus on, including working to lower the cost of living for middle class Americans, addressing price gouging on groceries and making reproductive rights enshrined into law.

He said they have an opportunity to vote for "a future that either goes backwards -- is divisive, dark and angry -- or one that is hopeful, unified, inclusive."

"Swifties for Kamala," the grassroots organization of Taylor Swift fans working to elect former Vice President Kamala Harris, announced over the weekend they had sent over 250,000 mailers to Pennsylvania voters encouraging them to pledge their support to Harris, make a voting plan and encourage their friends to do the same.

Included in 50,000 of the mailers were friendship bracelets beaded with the words "voting era," a reference to the bracelets fans trade at Swift's Eras Tour.

"Every vote in this election matters, especially in Pennsylvania, which could be the state that makes the planets and the fates and all the stars align for VP Harris," the mailers read. "We think you belong in the voting booth because we are never going back, like ever.”

-ABC News' Brittany Shepherd

At an ongoing hearing in Philadelphia over Elon Musk and his super PAC's $1 million voter sweepstakes, a defense attorney said the giveaway is a way to recruit spokespeople for America PAC, while the Philadelphia district attorney testified it is a "scam."

According to defense attorney Chris Gober, the recipients of the million-dollar checks sign contracts after being selected from a pool of people who signed the petition to serve as a spokesperson for the PAC. Tomorrow’s winner has already been decided to be a registered voter from Michigan.

"They were not chosen by chance," Gober said during the hearing in the Philadelphia County Court of Common Pleas.

Minutes later, Philadelphia District Attorney Larry Krasner's team played a video in court where Musk vowed the money would be awarded "randomly."

"So I have a surprise for you, which is that we are going to be awarding a million dollars randomly to people who have signed the petition every day from now until the election,” Musk told a crowd in Pennsylvania on Oct. 19.

Testifying from the witness stand, Krasner slammed the giveaway as a "scam" and "grift" intended to "flood money into American elections."

"That ain't a contract and that's not employment," an animated Krasner, the first witness in the hearing, said. "There are certain words that stick out -- awarding. Doesn't sound like a spokesperson contract."

"It is unquestionably supposed to be random selection despite what I think is a very disingenuous version of it that I think I heard today," Krasner said.

Krasner testified that the America PAC has effectively scammed Philadelphia residents out of their personal information -- which they entered to sign the petition to enter into the giveaway -- while the giveaway never actually offered them a random chance of winning the million-dollar prize.

"They were scammed for their information," said Krasner, who is asking a judge to immediately stop the giveaway.

-ABC News' Peter Charalambous

Former Republican Rep. Liz Cheney responded to former President Donald Trump's attacks on her in an interview with ABC's "The View" on Monday, including a remark he made suggesting she should "have guns trained on her face."

"He knows what he's doing," Cheney said. "He knows it's a threat with the intent to intimidate. Obviously, the intimidation won't work."

Cheney emphasized Trump's history of violent rhetoric, including how he responded to the violence on Jan. 6.

"For over three hours, he watched police officers be brutally beaten. He was told the vice president had been evacuated, he said, 'So what?'" Cheney said. "People were rushing in, pleading with him, 'Tell the mob to leave,' and he wouldn't."

"That level of depravity, he knows he has no defense to that, and he knows that the American people will not entrust again with power anyone who would do something that cruel," she continued. "And so because he can't respond to that, he tries to change the subject, he tries to threaten. It's what autocrats do to try to get their political adversaries to be silent."