Postal voters in Gosport are being sent replacement ballot papers for the forthcoming borough council election, following a printing error.
This year, Gosport voters will be choosing candidates in borough council, county council and police commissioner elections.
Rather than attend polling stations on 6 May, almost 10,400 residents have decided to vote by post. They have been sent packs with three ballot papers - one for each of the three elections.
But a printing mistake meant that one of the three ballot papers - the one for Gosport Borough Council - did not have party logos on it, and was therefore not legally valid.
So replacement borough council ballot papers are being sent out. The county and police commissioner ballot papers are valid and not affected.
Local elections are run by an official called the returning officer. The returning officer for the Gosport elections, Graeme Jesty, said: "Unfortunately, the printing error on the borough council ballot paper was not spotted during a final check.
"I'm very sorry for this, and I apologise to postal voters for the error and the inconvenience.
"I also apologise to the borough council and to candidates and their agents, all of whom were informed straight away.
"The mistake is being put right and will not affect the integrity of the election.
"I'm notifying postal voters by text or email where possible. Voters for whom I don't have email address or mobile numbers will get a letter by first-class post, which should arrive on Saturday.
"Replacement ballot papers for the borough council election will be sent out as soon as possible, and should arrive with voters on Tuesday or Wednesday.
"The replacement ballot papers will be on cream-coloured paper, while the incorrect ones were on grey paper. This means it will be absolutely clear that the grey ones are invalid. Any grey ballot papers received will be not be looked at or used, and will be securely destroyed.
"I would like to thank voters, candidates, agents and other colleagues for their patience."
The returning officer is also informing residents of the situation on Gosport Borough Council social media.
If you are a postal voter in Gosport for the forthcoming local elections, please follow this guidance:
A leaflet explaining what to do will be enclosed with the new ballot paper. If you need more information please call 023 9254 5227 or email the elections team.