Gaga played "God Bless America" at the series of get-out-the-vote rallies that also featured Oprah Winfrey, Jon Bon Jovi, Ricky Martin and others before today's (Nov. 5) pivotal election.
She also performed "Dark Horse," "Part of Me" and "Firework."
Diddy remains behind bars until his trial begins in May 2025.
The track comes 16 years after the Black Eyed Peas founder released "Yes We Can" in support of President Barack Obama.
Katy Perry is also supporting Harris on Nov. 4, at her Pittsburgh rally.
“We have been passed a file by the police to consider a charging decision in this case," the Crown Prosecution Service.
With just three days to go before the election, Harris will be "live from New York."
The incident was captured on video and shared on social media, where "Kelce" trended Saturday (Nov. 2).
The vice president is expected to speak at the event, which takes place five days before Election Day on Nov. 5.
The star recently returned from a trip to Paris so she can hit the polls.
