More than two thirds of households in Wolverhampton have already registered after forms were delivered to every property in the city this autumn.
And canvassers will be going door to door over the next few weeks to help people complete their registration as soon as possible.
The forms are used to compile the electoral register, which has to be updated annually, and will mean people are eligible to vote in the local council and European Parliament elections in May.
Being on the electoral register is a legal requirement and is also used as part of the credit checking process - so people that aren't may find they have trouble getting credit, a bank account, mortgage or even a mobile phone.
Around 70% of households in Wolverhampton have already registered - but some 30,000 have yet to do so.
Wolverhampton City Council's Electoral Services Manager David Garner said: "Registering to vote is very simple - all people have to do is check the information contained on the forms includes everyone in their household who is eligible to vote and either confirm the details with us, or amend and update it if necessary.
"We've sent out 2 letters to each household that hasn't yet registered, and over the next few weeks our canvassers will be going door to door to complete their registration."
Canvassers will complete registration on the doorstep, though people who have received a form through the door can complete their registration either via the Type=links;Linkid=2649;Title=Registration Service;Target=_blank; or by calling free on 0800 197 3646 if no changes are required, or by making the necessary amendments and sending the form back in the freepost envelope supplied.
The canvass should be completed by Sunday 26 January, 2014.
- released: Thursday 2 January, 2014