The municipalities on the list include Gävle, Helsingborg, Jönköping and Norrköping.
"We want to reach out to voters who have voted early at these polling stations at the current times. If you know you have done so, we recommend that you vote again at your polling station on election day, September 13," says Anna Nyqvist, head of the Swedish Election Authority, in a press release.
"You should not vote early again, then all your early votes will be invalid," writes the Election Authority.
At the same time, the investigation into incorrect registrations in 13 municipalities continues, which means that the list may be updated.
