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Walz-Vance debate updates: VP candidates set for showdown in close presidential race

The matchup could have an impact on critical undecided voters.

Last Updated: October 1, 2024, 6:09 PM EDT

The vice-presidential debate between Tim Walz and JD Vance could prove to be a major factor in the presidential election -- given how close the race is and its potential impact with undecided voters.

The 90-minute CBS News showdown starts at 9 p.m. ET in New York City. ABC News Digital will live blog throughout the day and evening, pre-debate coverage will air at 8 p.m. on the ABC network and stream on ABC News Live -- followed by the debate itself and post-debate analysis.

2:56 PM EDT

CBS News says mics won't be muted for VP debate

CBS News, the network hosting the debate, said that the candidates' microphones will not be muted, but clarified in a press release that it "reserves the right to turn off candidate microphones."

This is a shift from the CNN presidential debate in June and the ABC News presidential debate held earlier this month, where microphones were muted unless it was the candidate's turn to speak.

PHOTO: Republican Vice Presidential nominee Senator JD Vance speaks in Phoenix, Arizona, Sept. 5, 2024. | Vice President candidate and Minnesota Governor Tim Walz speaks in Grand Rapids, Michigan, Sept. 12, 2024.
Republican Vice Presidential nominee Senator JD Vance speaks at the Arizona Biltmore in Phoenix, Arizona, Sept. 5, 2024. | Vice President candidate and Minnesota Governor Tim Walz speaks at a rally at the Grand Rapids Public Museum in Grand Rapids, Michigan, Sept. 12, 2024.
Go Nakamura/Reuters | Brett Farmer/Shutterstock

Read more here.

-ABC News’ Oren Oppenheim

2:50 PM EDT

Emmer says Vance will hold Walz 'accountable' during VP debate

Rep. Tom Emmer, R-Minn., praised Vance on "This Week" Sunday, saying the Ohio senator will do a "great job" on Tuesday night and that "he's got the issues on his side."

"Vance could talk about the economy that Donald Trump fixed and that Harris and Biden broke. He can talk about the border that Trump fixed and they broke. He can talk about peace and stability around the world, which they don't even have a clue [about]; they've caused all of this disruption," Emmer said. "Once he understands that Tim Walz is just going to try and deflect and go into this folksy whatever, he'll hold him accountable."

Republican Majority Whip Tom Emmer appears on "This Week," Sept. 29, 2024.
ABC News

-ABC News’ Hannah Demissie

1:37 PM EDT

Why VP debates aren't all that important

Typically, fewer people watch vice presidential debates than presidential debates. And while presidential debates are historically one of the few things that can actually make a dent in the polls, vice presidential debates don't have the same track record.

According to Nielsen, since 2008, presidential debates have drawn an average audience of 65.7 million people. But vice presidential debates have drawn an average of just 54.1 million viewers. But 54.1 million people is still a pretty big audience -- so have past vice presidential debates actually changed the trajectory of the race?

That turns out to be a tricky question to answer. Read more here.

PHOTO: Democratic vice presidential candidate Minnesota Governor Tim Walz speaks during a campaign rally, Aug. 9, 2024, in Glendale, Ariz. Republican vice presidential nominee Sen. JD Vance speaks to supporters, Sept. 25, 2024, in Traverse City, Mich.
Democratic vice presidential candidate Minnesota Governor Tim Walz speaks during a campaign rally, Aug. 9, 2024, in Glendale, Ariz. Republican vice presidential nominee Sen. JD Vance speaks to supporters during a campaign event at the Northwestern Michigan Fair grounds, Sept. 25, 2024, in Traverse City, Mich.
Getty Images

-538’s Nathaniel Rakich and Amina Brown

1:07 PM EDT

How to watch the VP debate

The 90-minute debate will air on CBS and be simulcast on the ABC network and stream on ABC News Live.

ABC pre-debate coverage begins at 8 p.m. ET; post-debate ABC News coverage will go on until 11 p.m. ET. ABC News Live, ABC News’ 24/7 streaming news channel, will provide full coverage beginning at 7 p.m. ET and run through 12 a.m. ET.

PHOTO: Republican Vice Presidential nominee Senator JD Vance speaks in Phoenix, Arizona, Sept. 5, 2024. | Vice President candidate and Minnesota Governor Tim Walz speaks in Grand Rapids, Michigan, Sept. 12, 2024.
Republican Vice Presidential nominee Senator JD Vance speaks at the Arizona Biltmore in Phoenix, Arizona, Sept. 5, 2024. | Vice President candidate and Minnesota Governor Tim Walz speaks at a rally at the Grand Rapids Public Museum in Grand Rapids, Michigan, Sept. 12, 2024.
Go Nakamura/Reuters | Brett Farmer/Shutterstock

Read more about how to watch the debate here.

-ABC News’ Sarah Beth Hensley