National's Tamaki MP Allan Peachey has confirmed he will stand aside at the next election.
Mr Peachey, who has suffered a number of health scares since he was elected to the historically strong National seat in 2005, did not wish to discuss his health this afternoon but told the Herald his decision was down to a lack of confidence that he could serve out another three year term.
He said he wished to spare the taxpayer the expense of a by-election.
National Party President Peter Goodfellow said National would re-open a shortened candidate selection process in the electorate.
"On behalf of the whole National family, I want to send Allan our warmest and best wishes for the future. We are behind him as he leaves to focus on his treatment and recovery and spend more time with friends and family.''