FILE – President Joe Biden delivers his State of the Union speech to a joint session of Congress, at the Capitol in Washington, Feb. 7, 2023. A poll shows that a growing share of U.S. adults doubt that 81-year-old President Joe Biden has the memory and acuity for the job. That means Biden’s upcoming State of the Union address could be something of a real-time audition as he bids for a second term. (AP Photo/J. Scott Applewhite, File)

WASHINGTON (AP) — A new poll finds that a significant share of U.S. adults doubt the mental capabilities of 81-year-old President Joe Biden and 77-year-old Donald Trump, the Republican front-runner in what could be a rematch of the 2020 election. More than 6 in 10 say they’re not very or not at all confident in Biden’s mental capability to serve effectively as president. A similar but slightly smaller share say that Trump lacks the memory and acuity for the job. The findings come from a new survey by The Associated Press-NORC Center for Public Affairs Research.