7 out of 10 republicans don’t believe there is enough voter fraud occurring to make a difference, because cnn hasn’t reported on it, and there isn’t any hard proof, because cnn hasn’t reported on it.
https://www.rasmussenreports.com/public_content/politics/general_politics/may_2022/election_integrity_most_voters_still_suspect_cheating
A new Rasmussen Reports national telephone and online survey finds that 55% of Likely U.S. voters believe cheating likely affected the outcome of the 2020 presidential election, including 39% who think it’s Very Likely. Thirty-nine percent (39%) don’t think cheating affected the 2020 election, including 28% who say it’s Not At All Likely.
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And, of course, Democrats don't think so because they benefit from it.
https://www.nbcnews.com/meet-the-press/meetthepressblog/poll-61-republicans-still-believe-biden-didnt-win-fair-square-2020-rcna49630
Poll: 61% of Republicans still believe Biden didn’t win fair and square in 2020