Candidates vying for the Christchurch Central electorate are picking the race will be a nail biter.
Labour's Tony Milne says says it could come down to a handful of votes, so voter turn-out is key to ensure previous Labour strong-hold is returned.
Incumbent Nicky Wagner was in an exact tie for the seat in the last election, with special votes needed to seal National's first win since the electorate was created.
Take your Radio, Podcasts and Music with you