The comparison between Donald Trump and Lord Voldemort has been made many times in the run up to the US election, but a new study has shown that Harry Potter fans are indeed less likely to vote Trump.

Donald TrumpDonald Trump could be vanquished by Harry Potter readers.

The study by Professor Diana Mutz of the University of Pennsylvania found that the more Harry Potter books an American reads, the more their opinion of Trump lowers. “Reading Harry Potter books encourages more negative attitudes toward Trump,” Mutz wrote.

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“Each book that a person has read lowers their evaluation of Donald Trump by roughly 2- 3 points (on a 100 point scale). Although the size of this effect may seem small, to put it in perspective, it is on par with the impact of party identification on attitudes toward gays and Muslims.”

“When one considers that a given respondent may have read as many as seven Harry Potter books, then the total impact on evaluations of Trump could be as much as 18 units lower.” Mutz polled a “nationally representative” sample of 1,142 Americans in both 2014 and 2016 to get their views on Trump.

“Because Trump’s political views are widely viewed as opposed to the values espoused in the Harry Potter series, exposure to the Potter series may play an influential role in influencing how Americans respond to Donald Trump," Mutz wrote.

Mutz concluded her study by adding that her findings, “raise the hope that Harry Potter can stop the Deathly Donald and make America great again in the eyes of the world, just as Harry did by ridding the wizard world of Voldemort.”

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Harry Potter author Jk Rowling has previously referenced the comparisons that have been made between Trump and Lord Voldemort. Referring a BBC article that compared the two on Twitter, Rowling wrote: “How horrible. Voldemort was nowhere near as bad.”