Ron Mark's job as New Zealand First's deputy may be up for grabs, with the caucus set to vote on the deputy leadership on Tuesday morning.
Caucus members dodged questions on the matter last week, leading to speculation current deputy Ron Mark could be rolled.
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Mr Peters says he has "no idea" whether there will be more than one contender, while rumours swirled last week that a number of members want the job.
All eyes will be on Shane Jones, who previously contested the Labour Party leadership, losing to David Cunliffe in 2013.
Mr Jones has refused to comment if he would be running against Mr Mark, as have Tracey Martin and Fletcher Tabuteau. Jenny Marcroft hasn't ruled herself in or out of the contest.
New Zealand First's election for deputy joins the National Party's leadership battle, and the Green Party's process to elect a new woman co-leader.