Ron Mark's coup to become Winston Peters' deputy has succeeded.
As predicted by ONE News this week, Mr Mark has been announced as New Zealand's First deputy leader.
A statement this morning has confirmed rumours of a vote in caucus on Tuesday.
It comes after days of speculation that the former Carterton mayor had rolled fellow MP Tracey Martin from the job.
Ms Martin wasted no time in congratulating Mr Mark, who re-entered Parliament at last year's election after losing his list position three years earlier.
"I look forward to having a positive and productive working relationship with him as part of a strong and democratic Caucus," she said.
Winston Peters has been re-elected Party leader and new MP Clayton Mitchell has taken the position of Associate Whip.