(NewsNation) — Vice presidential candidates Ohio Sen. JD Vance and Minnesota Gov. Tim Walz will face each other in their first and only scheduled debate Tuesday.

Vice President Kamala Harris holds a small lead over former President Donald Trump, according to The Hill/Decision Desk HQ polling averages, and DDHQ gives the Harris-Walz ticket a 55% chance of winning.

Sixty-seven million people tuned in to the Sept. 10 presidential debate between Harris and Trump, and now it’s their running mates’ turn to let voters know where they stand on certain issues as the race dwindles down to the final days.

You can watch the CBS News Vice Presidential Debate live on NewsNation and stream it for free here and in our app. Find your channel at joinnn.com and download our app for fact-biased, unbiased news for all America.

What are the rules of the vice presidential debate?

The ground rules for the vice presidential debate have not publicly been released, but if the Trump- Harris presidential debate is any indication, there may be no studio audience and microphones may be muted. Also, the candidates may not be allowed to have notes on stage and the debate may not start with opening statements.

How to watch the debate between Vance, Walz

You can watch the CBS News Vice Presidential Debate live on NewsNation and stream it for free on the website and app. Find your channel at joinnn.com and download our app for fact-biased, unbiased news for all America.

CBS News will host the 90-minute debate at 9 p.m. ET Tuesday in New York City. The event will be broadcast on the CBS network and livestreamed on platforms where CBS News 24/7 and Paramount+ are available.

Anchors Norah O’Donnell and Margaret Brennan will moderate the debate.

What will Vance, Walz debate?

The topics of the debate are not revealed before but the economy, border, abortion and crime remain top of mind for many voters and are likely topics of debate for Vance and Walz.

In the first presidential debate between Trump and Harris, topics like the economy, abortion, Project 2025 and the border were among the topics debated. The two also launched personal attacks on each other during their answers as they offered their diverging visions for the future of America.

Are future debates scheduled?

Historically, vice presidential candidates have one debate, so a second is unlikely.

As for more presidential debates, Harris has accepted an invitation from CNN to participate in a debate on Oct. 23, according to her campaign. However, Trump has remained adamant he will not do another debate, saying it’s too late.

“I’ve done two. It’s too late to do another. I’d love to in many ways but it’s too late. Voting is cast,” Trump told a North Carolina rally crowd Sept. 21. Early voting in some states started as soon as Sept. 20.

Who is JD Vance?

Trump selected Vance, a 40-year-old U.S. senator from Ohio, as his running mate in July ahead of the Republican National Convention. Vance is a Marine veteran.

He has drawn attention to the immigration conversation with recent false claims of migrants eating pets in Springfield, Ohio, a claim that his running mate, Trump, mentioned during the presidential debate, leading to a viral social media buzz. Immigration will more than likely be a topic during the debate.

Vance has also gained recognition for himself through previous comments he made about Democrats being “childless cat ladies.” He has not backed down from the comments he’s made.

Who is Tim Walz?

Walz, an Army veteran and former schoolteacher, is the current governor of Minnesota. The 60-year-old served in the U.S. House from 2007 to 2019, having won as a Democrat in Minnesota’s Republican-leaning 1st Congressional District.

Supporters have begun calling him “Coach Walz,” a nod to his former role as a school football coach and a strategy to connect with the average American. Walz has embraced the “Midwestern dad” label, presenting himself as an average guy in hopes of attracting more moderate voters who may think Harris is too liberal.