President Joe Biden, left, and Democratic presidential nominee Vice President Kamala Harris arrive to speak about the administration's efforts to lower costs during an event at Prince George's Community College in Largo, Md., Thursday, Aug. 15, 2024. (AP Photo/Susan Walsh)

FILE - Democratic presidential nominee Vice President Kamala Harris speaks at a campaign rally, Aug. 10, 2024, in Las Vegas. (AP Photo/Julia Nikhinson, File)

Democratic vice presidential nominee Minnesota Gov. Tim Walz speaks at the American Federation of State, County and Municipal Employees (AFSCME) Convention in Los Angeles, Tuesday, Aug. 13, 2024. (AP Photo/Jae C. Hong)

Republican presidential nominee former President Donald Trump speaks at a news conference at Trump National Golf Club, Thursday, Aug. 15, 2024, in Bedminster, N.J. (AP Photo/Julia Nikhinson)

Republican vice presidential nominee Sen. JD Vance, R-Ohio speaks at a campaign event, Wednesday, Aug. 14, 2024, in Byron Center, Mich. (AP Photo/Carlos Osorio)

Republican presidential nominee former President Donald Trump speaks at a campaign rally Wednesday, Aug. 14, 2024, in Asheville, N.C. (AP Photo/Matt Kelley)