National is preparing to try to wrestle the Northland seat back from New Zealand First leader Winston Peters and at least five potential candidates are already in line to take on the challenge.
National lost the seat to Mr Peters in a byelection last year after the resignation of MP Mike Sabin.
The date for selecting the 2017 candidate is yet to be decided, but electorate chairwoman Rose May said Northland would be among the first on National's list.
Ms May said it would be a challenge to unseat Mr Peters, but emphasised the need for the right candidate to be selected.
"We need to have somebody who is well known in their own right and has that x-factor. If we can find that person, we will have no problem winning the seat back, but if we don't, then it's going to be a struggle."