In an impassioned speech, Richardson said Peters lacks basic human respect.
Party members are reconsidering their position after a clash with the youth wing on Sunday.
But he was tight-lipped about who's been tapped to replace him.
The Deputy Prime Minister addressed the conference on Sunday afternoon.
NZ First has opposed drug testing at festivals, but its youth wing says it's a "no-brainer".
"I think I've got more terms in me than some of those asking the questions."
More than 500 jobs are hanging in the balance.
Hundreds of disgruntled firearm owners are set to descend on a NZ First convention in Christchurch.
Winston Peters is promising a screening of the CCTV footage.
The Police Association says any change would be deeply disappointing.
A proposal has been with the Government since December.
New Zealand First has referred the leak to the police.
The Deputy PM said the "serious breach" is being reported to the police.
The Prime Minister says she has had a conversation with Winston Peters about the divisive topic.
Labour and NZ First both had figures during the election, but now there's no target.
"Darroch Ball will have blood on his hands."
"My expectation is that that kind of language just isn't appropriate."
"For goodness' sake, go get yourselves tested. Better to be alive than too late."
Labour is continuing firearms legislation reform following the Christchurch attack.
"What an amateur let loose on an international stage... Unbelievable."
"Totally uncalled for."
Heavyweight opponent Dereck Chisora is livid with promoter Eddie Hearn.
Shane Jones says it will help to stimulate the Northland economy.
The NZ First leader rebuked a bunch of flowers she sent him while in hospital.
The sister of NZ First MP Jenny Macroft was among the five injured.
There was a record number of pursuits in the first six months to 2019.