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

The U.S. Postal Service issued an alert to voters who are planning to mail an absentee ballot and urged them to send them through the mail on Tuesday.

Although the USPS said it is "ready to successfully deliver the nation's mail-in ballots for voters who choose to use us to vote," it is anticipating an uptick of ballots in the mail over the coming days.

"We continue to recommend that it is a good common-sense measure for voters who choose to mail in their ballots to do so before Election Day and at least a week before their election office needs to receive them. If a ballot is due on Election Day, the Postal Service recommends mailing the ballot by this Tuesday (October 29)," the agency said in a news release.

The USPS said 99.9% of ballots were delivered within a week in 2020 and 98.3% of ballots were delivered within three days.

The USPS said it has undertaken "extraordinary measures" that it has taken in past elections, including extra deliveries and collections, special pickups, specialized sort plans at processing facilities to expedite delivery to boards of elections, and local handling and transportation of ballots.

Bill Nye "The Science Guy" encouraged Philadelphia residents to vote in this year's election.

Bill Nye The Science Guy encourages Philadelphians to vote and discussed why climate is on the ballot during a visit to Philadelphia.

He spoke at a "Party to the Polls Purple Tour" on Tuesday morning.

The educator discussed why climate is on the ballot and how this year's presidential race could impact the future of climate change.

Former President Donald Trump, speaking to reporters at Mar-a-Lago in Florida on Tuesday, swiped at Vice President Kamala Harris ahead of her speech at the Ellipse in Washington, D.C., where she will make her closing case to voters.

"She's running on a campaign of demoralization and a campaign of destruction," Trump said. "But really, perhaps, more than anything else it's a campaign of hate, of absolute hate."

He later added, "She is going out and only criticizing talking about Hitler and Nazis because her record's horrible."

Vice presidential nominee Ohio Sen. JD Vance, Donald Trump's running mate, will sit down for an interview with Joe Rogan on Wednesday for his podcast, a spokesperson for Vance told ABC News.

The interview will take place in Austin, Texas, and is expected to drop later this week.

Vance's interview with Rogan comes after Trump sat down with Rogan last week for a three-hour interview.

Rogan posted on X on Monday that Vice President Harris' campaign offered to do his podcast on Tuesday on the road, but that he didn't want to travel from his studio.