Around 60,000 households in Cornwall have failed to register to vote and are costing the county's council extra money to ensure they get the chance.
Voter registration forms were posted to over 255,000 homes in Cornwall in October for the 2013/14 Register of Electors with a reminder sent to around 95,000 households in November.
However, so far only just over three quarters have responded which means that around 60,000 forms are still outstanding.
A spokesman for Cornwall Council said the authority was required by law to send a canvasser to visit households if no response was received – all of which means a cost to council taxpayers.
Denise Holwill, Cornwall Council's electoral services manager, said as a result teams of canvassers would be visiting homes where no vote had been registered this month and during January.
She said: "It is really important that all those who are eligible actually register to vote.
"People think that because they are registered for council tax, they are registered to vote but this is not the case.
"It is easy to register either by confirming the information on the form which you will have received which gives details of who is living in your home and who is eligible to vote.
"If none of those details have changed, you can let Cornwall Council know either by 'phone, text or by email.
"Using these methods is not only convenient to you but saves money. If the details are not right, you can give us the correct details by amending the form and sending it back to us."
By law, all households have to provide details for the electoral register and this will also ensure that people can vote in the European elections taking place in May 2014.
Electoral registration is also one of the criteria used by credit checking agencies and people not on the register may find it difficult to get a loan, mortgage or mobile phone contract. Other pitfalls include not being eligible to apply for certain jobs, which require security checks or being able to open a bank account.
Mrs Holwill said canvassers will be visiting properties which have not already responded between December 13 and 22 and from January 2-19.
She said all canvassers will carry photo identification and anyone with queries about registration can call 0300 123 1115 or email firstname.lastname@example.org