Her father Fred Yule was mayor of Greytown Borough Council. Greytown people are being urged to take action now to enrol to vote or check that their enrolment details are correct in the wake of Mrs Gray's resignation.
The by-election will be held next year on February 11.
"The by-election for Greytown takes place in just 12 weeks' time," said Philip Parkes, registrar of electors for the Wairarapa electorate.
"All eligible people will need to enrol or update their enrolment details by 16 December 2013 to vote in the by-election," he said.
Nominations for the role are currently being called for, said Mr Parkes. He said almost 2600 people would be able to cast their vote by post in February to choose the next Greytown community board member.
"Only those people who are correctly enrolled will receive voting papers in the mail and be able to have a say in the election."
Go to www.elections.org.nz to check your details or enrol to vote. You can also get enrolment forms by calling 0800 36 76 56, Freetexting your name and address to 3676, or from any PostShop.