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Watch: Heated altercation between Labour's Mt Roskill candidate and husband of National Party rival

Footage has emerged of a confrontation between Auckland's Mt Roskill by-election Labour candidate and the National candidate's husband.

The feisty altercation occurred on Wednesday after the Central Leader's Mt Roskill by-election debate between the National candidate Michael Wood and National candidate Parmjeet Parmar.

The Raw video footage shows Mr Wood confronting Ms Parmar's husband, Ravinder after the debate.

A man is seen standing between the two after the confrontation appears to get heated.

Mr Wood accused his rival's husband of making comments about his wife, former chair of the Puketapapa Local Board, Julie Fairey, Fairfax reported.

Ms Parmar told Fairfax today Mr Wood "absolutely over-reacted to this, his response was disproportionate".

The accusations over Mr Parmar making personal comments about Mr Wood's wife were denied by Ms Parmar according to Fairfax.

"Basically I've been accused of criminal assault," said Mr Wood after the altercation.

He denied that he "manhandeled" Mr Parmar and said it was nothing more than a few stern words.

"I think this has been a really unfortunate incident and I want to get back to a positive campaign," said Mr Wood.

More than 160 people were at the debate on Wednesday.