A startling new Washington Post-ABC News poll suggests that President Joe Biden has seen his support collapse among African American voters.

The survey, which was carried out between April 28 and May 3, found that just 52% of black respondents approve of how Biden has handled his job as president.

Trump sees black support more than double

That represents a startling decline from January of 2021 when 82% of African Americans expressed approval of his performance.

In what may be even more startling for the White House, 27% of black respondents indicated that they would probably or definitely vote for former President Donald Trump in next year's election.

This figure is especially significant given how the former president is estimated to have only captured around 12% of the African American vote in 2020.

What's more, black voters make up a large share of the electorate in Georgia, a state which Trump lost by a razor thin margin.

Significant falls in support for Biden among Hispanics

Nor are African Americans the only demographic that Trump appears to have made substantial inroads with, as the poll also showed growing support among Hispanics.

The survey found that 43% of Latino voters would probably or definitely cast a ballot for Trump, up from the 32% who did so the last time he ran.

Those figures aren't the only source of bad news for Biden, as the poll also revealed that most Americans do not believe he is capable of serving out another term.

Just under one third believe he possesses the mental acuity to function as commander in chief. In contrast, 54% think Trump is cognitively functional, a figure which has grown by 8% since he departed from the White House.

Former Clinton pollster: "This poll has to send shockwaves"

The gap grew even wider when respondents were asked to rank the candidates physically. Whereas 64% believe Trump has the physical health to serve effectively, only 33% believe that is true of Biden.

Meanwhile, 68% regard Biden as being too old to be president compared to 44% who say the same about Trump. Interestingly, the two men were born less than four years apart.

Mark Penn is a former pollster for the Clinton White House, and he told Fox News on Monday that the poll should give Democrats cause for serious concern.

"Most Democrats didn't want him to run. But this poll has to send shockwaves. He just announced for presidency. You're supposed to go up when you announce, not down," Penn said.