In the interests of balance and fair play, something I am sure we all love to see, as we don't wish to ape the nasty old "MSM", the fact-checking "logically.ai" website has this to say about the Democracy Institute polling:
"A closer look at the poll results the account leans on to formulate its tweets reveals some significant biases. The Democracy Institute poll, the one which netted PollWatch2020 that precious Trump retweet, was run in conjunction with the UK’s Daily Express, a right wing tabloid. The Democracy Institute itself is run by Patrick Basham, an adjunct scholar at the influential libertarian think tank The Cato Institute. FiveThirtyEight’s influential pollster ratings don’t even list The DI among the nearly five hundred pollsters which it ranks for reliability and methodological soundness. As for the partnership with the Daily Express, although it is common for polling companies to conduct their studies in conjunction with a media outlet, usually resulting in the results being published as a big splash, such polls are, in the best cases, accompanied by a link to the full dataset. The Express article on the DI’s August poll ends with a methodological note, but the full data is not given. The DI’s website does have a starkly partisan commentary from its founder on the poll’s findings, but no further elaboration on methodology; DI is not a recognised polling institution, and does not act like a respectable one."