2024 election updates: Trump and Harris bring their campaigns to the battleground state of Wisconsin

It's a state that could tip the result of the 2024 election.

And Trump is ramping up rhetoric sowing doubt on the state's voting process.

In a post on his social media site on Wednesday morning, Trump claimed there's "cheating" happening at "large scale levels." He did not elaborate or provide evidence for his claims.

Some isolated incidents have emerged, including approximately 2,500 potentially fraudulent voter registration applications being investigated in Lancaster County, though officials stressed the system worked and that voters can be confident in the election.

-ABC News' Soorin Kim and Olivia Rubin

Vice President Kamala Harris and her running mate Gov. Tim Walz will return to North Carolina this week amid early voting.

As of Tuesday, October 29, more than 3.1 million people across North Carolina have cast ballots between absentee and early in-person voting.

Harris will attend a campaign event in Raleigh on Wednesday. The rally will be held at Coastal Credit Union Music Park at Walnut Creek.

Democratic vice presidential candidate Walz will visit Charlotte, Greensboro, and Asheville in a series of events aimed at encouraging North Carolinians to vote early for the Harris/Walz ticket.

Republican vice presidential candidate Sen. JD Vance will also return to North Carolina on Thursday for a town hall event.

The town hall will be hosted by Turning Point PAC and Turning Point Action at High Point University.

Turning Point says many students remain undecided voters even days before the Nov. 5 election. Turning Point said it will work to ensure the audience is "inclusive of students of a broad spectrum of cultural backgrounds and experiences as well as political affiliations."

The Pennsylvania push continues Wednesday in the race for the White House.

Democratic presidential nominee, Vice President Kamala Harris, will hold a rally in Harrisburg on Wednesday.

Republican VP nominee, JD Vance, will lead a rally in Bedford, which is in western Pennsylvania.

Former President Donald Trump said on social media late Tuesday that his "campaign of positive solutions to save America" stands in contrast to what he called Vice President Kamala Harris' "campaign of hate."

"She has spent all week comparing her political opponents to the most evil mass murderers in history," Trump wrote on Truth Social, before also hitting out at President Joe Biden.

"Now, on top of everything, Joe Biden calls our supporters 'garbage,'" Trump continued, though he was the first to use the term "garbage can" to describe the United States with a migrant population.

Calling Harris and Biden "unfit" to lead the country, Trump claimed he's leading "the biggest, broadest, and most important political coalition in American history."

"We are welcoming historic numbers of Latinos, African Americans, Asian Americans, and citizens of every race, religion, color, and creed," Trump wrote. "It is my desire to be the president of all the people," he continued.

-ABC News' Soo Rin Kim, Lalee Ibssa and Kelsey Walsh