More postal ballots have been reported missing in Plymouth – after hundreds of voters complained theirs had not been received.
It is understood 1,510 postal voting packs are unaccounted for.
Earlier reports suggested the number of people who had applied for a postal vote and not received their packs was far lower, at 580.
Plymouth City Council, which blamed a computer problem, apologised and said it was urgently investigating.
Polls are open from 07:00 to 22:00 BST on Thursday, and postal ballots can be used at polling stations.
The council said it was authorised to issue replacement post voting packs until 17:00 BST on polling day.
However, a spokeswoman said emergency proxy votes for those living abroad were not permitted under the circumstances.
Three constituencies are affected: South West Devon, Plymouth Moor View, and Plymouth Sutton and Devonport.
Emily Dymond, who lives in Canada but can vote in Plymouth Sutton and Devonport, said she was “really frustrated” …