Colin Craig's wife has called a blogger's claims of sexual harassment by her husband "appalling" and a "triumph of lies over truth".
Whale Oil blogger Cameron Slater, in a series of posts in 2015, claimed former Conservative Party leader Mr Craig sexually harassed his former press secretary Rachel MacGregor.
Ms MacGregor resigned suddenly two days before the 2014 election, having worked closely with Mr Craig from about the time he founded the Conservative Party three years earlier.
Mr Craig is suing Mr Slater for defamation over his blog posts, while Mr Slater is counter-suing Mr Craig over allegations the former politician made in a 12-page pamphlet he sent to 1.6 million homes trying to defend himself.
On Monday Mr Craig's wife, Helen, told the High Court at Auckland Mr Slater's posts were part of a "nightmare" campaign aimed at her husband that were not based on facts.