One-fifth of Democrat voters believe that Joe Biden (D), the Democrat Party’s presumptive nominee, is suffering from “some form” of dementia, and a majority of likely voters say it is important for him to address the issue publicly, a Rasmussen Reports poll released Monday revealed.

The survey, conducted June 25-28 among 1,000 likely voters, asked respondents, “From what you have seen and read, do you believe Joe Biden is suffering from some form of dementia?”

The survey found that 38 percent of voters, overall, believe he has dementia, while 20 percent within his own party say the same. According to Rasmussen, “that compares to 66% of Republicans and 30% of voters not affiliated with either major party.”

The survey also asked respondents, “How important is it for Biden to address the dementia issue publicly – very important, somewhat important, not very important or not at all important.”

A majority, 61 percent, of all voters believe it is “important” for the former vice president to address the issue publicly, “with 41% who say it is Very Important.”

Slightly over one-third of overall voters, 36 percent, do not believe it is an important issue to publicly address, although “fifty-one percent (51%) of both Democrats and unaffiliated voters agree that it is important for Biden to address the dementia issue publicly.”

Rasmussen emphasized that it did not specifically define the word “dementia” in its survey, providing the Merriam-Webster dictionary in the summary of the findings.

The survey’s margin of error is +/- three percentage points.

The survey coincides with a Restoration PAC poll released last week, which found that only 50 percent of voters in both Michigan and Wisconsin — crucial battleground states — view Biden as “up the task mentally and physically to handle the duties of president of the United States.”