Biden talks about passing torch in address

Former Secretary of State Hillary Clinton published an op-ed in the New York Times on Tuesday reaffirming her support of Harris and warning of the attacks that Republicans will use against her during the campaign.

The 2016 Democratic nominee said that Harris is "chronically underestimated, as are so many women in politics, but she is well prepared for this moment," citing the vice president's experience as a prosecutor, U.S. senator and four years in the White House.

"Harris has sat with the president in the Situation Room, helping make the hardest decisions a leader can make. And when the extremist Supreme Court overturned Roe v. Wade, she became the administration's most passionate and effective advocate for restoring women's reproductive rights," Clinton wrote.

Clinton referred to her own candidacy and the sexist attacks labeled against her by Republicans and critics. She said Harris "will face unique additional challenges as the first Black and South Asian woman to be at the top of a major party's ticket."

"Ms. Harris's record and character will be distorted and disparaged by a flood of disinformation and the kind of ugly prejudice we're already hearing from MAGA mouthpieces. She and the campaign will have to cut through the noise, and all of us as voters must be thoughtful about what we read, believe and share," Clinton said.

Arizona Sen. Mark Kelly dodged questions from an ABC News reporter Tuesday about whether he received vetting materials for a potential vice presidential ticket.

"This is not about me," he said. "I'm going to be focused on doing everything I can to make sure she is elected because we cannot have a repeat of what we saw between 2016 and 2020."

Kelly is seen as one of the front-runners to be Vice President Harris' running mate, sources have told ABC News.

MORE | Who is Sen. Mark Kelly, a possible Harris VP pick?

Harris is scheduled to visit Houston on Thursday to deliver the keynote speech at the American Federation of Teachers' 88th national convention, according to the campaign.

"The Vice President's speech to educators from communities throughout the nation is a continuation of her consistent efforts to fight for workers across America, including as Chair of the White House Task Force on Worker Organizing and Empowerment," the campaign said in a statement.

Harris rallied voters in battleground Wisconsin on Tuesday, her first presidential campaign event since securing enough delegate pledges for the Democratic nomination if they keep their word -- and used the rally to sharply frame her race against former President Donald Trump.

Harris attacked Trump and his running mate, Ohio Sen. JD Vance, on the issue of abortion and Project 2025, the conservative presidential transition blueprint fronted by the Heritage Foundation.

"We'll stop Donald Trump's extreme abortion bans because we trust women to make decisions about their own body and not have the government tell them what to do," Harris said to raucous applause. "And when Congress passes the law to restore reproductive freedoms, as president of the United States, I will sign it into law."

During the rally, Harris touted her previous experience while making a dig at Trump.

"In those roles, I took on perpetrators of all kinds: predators who abused women, fraudsters who ripped off consumers, cheaters who broke the rules for their own gain," she said. "So, hear me when I say, I know Donald Trump's type."