Renegade MP Gaurav Sharma faces serious consequences for allegations he's made about bullying.

A special Labour caucus meeting will be held this week to determine his future, with MPs having the ability to expel or suspend him.

Newstalk ZB Political Editor Barry Soper suggests if he's suspended, he may be told to keep quiet to be allowed back in.

Soper told Mike Hosking at the same time, expelling Sharma could backfire.

He says Sharma will be able to continue to criticise the party, which could be even more damaging.

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