READ: Most voters say Biden's "too old" to run in 2024, another poll finds

President Biden is "too old" to run for re-election in 2024, 73% of registered voters told a poll for the Wall Street Journal that was published Monday.

Why it matters: This compares to 47% of voters who said the same about his close 2024 election rival former President Trump, who at 77 years old is only three years younger than Biden.

• The WSJ poll is the latest to show a majority of surveyed voters' concerns that the 80-year-old Biden might be too old to effectively serve for four more years.

By the numbers: The poll contacted 1,500 registered voters Aug. 24-30 and 750 of these responded to the poll that has a margin of error of 3.6%, per the WSJ.

• Some 48% of voters said Biden was likable, but 60% said he's not "mentally up for the job of president."
• That compares with 31% who found Trump likable and 49% who consider the former president is not "mentally up for the job of president."

What they're saying: Biden addressed concerns about his age during a Labor Day speech in Pennsylvania on Monday.

• "The only thing that comes with age is a little wisdom," he said. "I've been doing this longer than anybody, and guess what, I'm going to continue to do it with your help."
• Representatives for the White House did not immediately respond to Axios' request for comment.

Read the poll in full, via DocumentCloud:

Go deeper: How Biden is running against his age in 2024