NZ First leader Winston Peters has responded with restraint, after a comment from his MP Richard Prosser resulted with David Seymour publicly calling him a "f**king idiot".
Earlier today, Mr Prosser told the Business New Zealand conference at Te Papa that his party NZ First would bring electricity assets back under a state-owned, state-controlled umbrella.
"That means if you have shares in Contact - get rid of them now," Mr Prosser said.
Asked how he proposed to fund an $11 billion buy-back of electricity companies, Mr Prosser said they would be bought back over time at the price they were sold for.
However, Mr Peters has labelled this a "throwaway line that was not fully explained," he said in a statement.
"Had he had the time, he would have explained that the buyback of power companies would be at an appropriate time in the future, that is, we would only be buying back shares when they became available," Mr Peters said.
After Mr Prosser had made the remarks, Mr Seymour took the stage to tell the audience that Prosser's remarks showed how the last nine years of having reliable, orthodox economic policy could crash down in four weeks time.
"The idea that you would have somebody who pretends to hold the balance of power - to come and tell you that a stock trading at $5.85 is going to be nationalised at $3.10 and you better all sell it.
"Well, I realise that in a role such as mine you are supposed to have a certain amount of decorum. But that makes me really angry - what a f***ing idiot," Mr Seymour said to laughter and applause.
"I mean what an idiot."