‘I think he cannot win.’ New Globe/Suffolk poll shows strong unhappiness with Biden as the nominee.

About 69 percent of Republican or Republican-leaning voters said they are satisfied with Trump as the party’s nominee, according to the poll, which was conducted days after the shooting at a Trump campaign event. By contrast, just 29 percent of Democrat and Democratic-leaning voters said the same of Biden, while 64 percent said they would prefer the party put forward someone else.

That is despite 54 percent of likely voters saying they approve of the job Biden is doing.

“Biden has done a fabulous job and maybe he would continue to do a good job, but I think he cannot win,” said Ruth Ladd, a 74-year-old independent voter from Lexington, who backed Biden in 2020 but now wants him to withdraw from the race.

“It’s not what people can do, it’s what the public at large sees,” she added, calling Biden’s debate performance last month a “disaster all around.”

Biden has publicly resisted calls to step aside, and he suggested in a statement Friday that he does not intend to drop out, saying he looks “forward to getting back on the campaign trail next week,” including to make “the case for my own record and the vision that I have for America.”

Despite the strong feelings that the president should bow out, Massachusetts is unlikely to deliver its 11 electoral votes to Trump, even if Biden remains in the race, as he has repeatedly, publicly pledged. Biden leads his Republican opponent 47 percent to 29 percent among the 500 likely voters surveyed, though the gap is dramatically tighter than the 30 percentage points Biden led by in a late April poll.

That slide in Massachusetts doesn’t bode well for Biden in other states where he won in 2020 but Trump proved more competitive, said David Paleologos, director of the Suffolk University Political Research Center.

“It’s still indicative,” Paleologos said. “Then New Hampshire is in jeopardy, and the ‘blue wall’ states aren’t going to go Biden’s way.”

But Biden, 81, has faced a growing chorus of calls to step away from the campaign in the weeks after his disastrous debate last month, splitting the party as it lurches toward next month’s Democratic National Convention.

The poll’s results follow months of surveys indicating that Biden’s support has slipped in key battleground states, many of which Trump, 78, is leading in head-to-head matchups.

In Massachusetts, Representative Seth Moulton was among the first congressional Democrats to call for Biden to step aside. Governor Maura Healey, long a reliable Biden surrogate, has said he should “carefully evaluate” whether he’s the Democrats’ best hope to beat Trump. And late Thursday, a group of seven Democratic state senators issued a joint statement calling for Biden to step aside, saying he is “unable to effectively prosecute the case against Donald Trump.”

Many Massachusetts Democratic voters appear to agree. The discontent was noticeably higher with younger voters, with 77 percent of those under the age of 35 saying they prefer a different nominee — the highest among any age group — compared to 47 percent of voters age 65 or older. Young voters, by and large, don’t like the job Biden is doing, with 53 percent disapproving.

The heightened unhappiness among young people underscores months of national polls showing that young people, who were part of Biden’s winning coalition in 2020, are especially dissatisfied with their presidential choices this fall.

“He’s dead weight at the top of the ticket, and he’s going to bring every other Democrat down with him,” said Eamon OCearuil, a 21-year-old Harvard University student from North Andover. “It’s tough to find glimmers of hope when you have two octogenarians or near octogenarians who are the front-runners.”

Massachusetts voters appear driven by an almost existential concern for the country. Nearly 33 percent of voters said their top issue is the future of American democracy, outpacing concerns over the economy and inflation (26 percent) or immigration and border security (13 percent).

Nearly 61 percent of those surveyed said the country is heading in the wrong direction, a slight jump from the 57 percent who said so in April.

“The way we make decisions about who we’re going to elect is really flawed. It’s about performance and catchphrases and zingers — and Trump is a master at that. He says things people want to hear,” said Gonzalo Castro, a 61-year-old software engineer and unenrolled voter from the town of Harvard who has been “voting against Trump since he started running for office.”

“What’s important to this country is really depressing,” he said.

Less clear is what impact the assassination attempt on Trump will have, not only on the presidential race but people’s perception of the nation’s well-being.

Nearly 50 percent said the shooting last Saturday in Butler, Pa. — in which a 20-year-old fired multiple bullets, injuring Trump, killing one audience member, and critically wounding two others — did not change their view of the country’s trajectory, slightly edging those who said it made them more worried. Asked who they “hold most responsible” for the shooting, more voters (29 percent) pointed to Trump himself than anyone else. The Secret Service was next on the blame list, with close to 21 percent of voters saying the agency was most responsible for the shooting.

Further, a vast majority of voters — 88 percent — said the shooting did not change how they planned to vote in November.

“I don’t like Donald Trump, but I wouldn’t shoot the guy in the head. I’d use my power at the ballot box,” said Angie Wilson, a 49-year-old Democrat from Douglas. Wilson said she has concerns over Biden’s ability to beat Trump but isn’t sure if another Democratic candidate is an option. “It’s a little late for that.”

Others insist that Biden simply remains the best choice to defeat Trump this fall, pointing to his record in office and the largely uncontested primaries that he won earlier this year.

“I have a grandmother that lived until she was 97 years old, and she was more lucid than I was as a child — there’s nothing wrong with his age,” said Carla Pantaleon, a 56-year-old real estate agent from Boston.

“I still think he’s the best thing that we can choose for now,” she added. “I’m not interested in another four years of having the country being a laughingstock.”

Trump, meanwhile, had already consolidated support among what had been a divided Republican Party during the primaries. The Republican National Convention, which came to a close early Friday morning, featured several of his former rivals, including former UN ambassador Nikki Haley, who called for voters to rally behind Trump.

Marie Barns, a 59-year-old medical assistant who said she voted for Biden in 2020 because Trump “couldn’t keep his mouth shut,” said that she was reverting back to supporting the Republican because of concerns about the economy and the migrant crisis.

But she lamented the intense divisiveness in politics.

“Hopefully, after this attempt on his life,” she said of Trump, “maybe he will calm down a little bit.”

The poll was conducted from Tuesday to Thursday, and its margin of error was plus or minus 4.4 percentage points. The margin of error was plus or minus 5.9 percent among Democratic and Democratic-leaning voters, and 9.1 percent among GOP or GOP-leaning voters. Live callers reached respondents via mobile and landline phones.

Matt Stout can be reached at [email protected]. Follow him @mattpstout. Anjali Huynh can be reached at [email protected].