Labour is seeking a new person to run in East Coast Bays after its candidate withdrew from the race.
Rohan Lord, a former America's Cup sailor and Olympic sailing coach, decided not to stand in the electorate.
Labour general secretary Andrew Kirton said Mr Lord's personal circumstances had changed, but he did not give any further detail.
He said being a political candidate was a big commitment, and it was not uncommon for one or two people change their minds.
However, Newstalk ZB reported Mr Lord pulled the plug because he was not happy with being 72nd on the Party list.
The former Yachting New Zealand and London Olympics team manager had been keen to use his business and fundraising background to knuckle down and make some changes in the seat held by outgoing National MP Murray McCully since 1987.
But Mr Lord said when he was told his list-place he was left disheartened.
Mr McCully held the East Coast Bays seat for 30 years - apart from two terms as the Albany MP - and won with a 15,000-vote majority in 2014.
One of his staffers, Erica Stanford, was chosen to stand in his place and was all but certain to enter Parliament.
Labour also sought a Hamilton West candidate to replace Sue Moroney, who would stand down at the election.
Ms Moroney announced her retirement last month after she failed to get a winnable spot on Labour's list.
Labour completed its selections in the other 69 seats. It announced its rankings last month.
National was expected to announce its rankings in June or July.
