TV3 political commentator Linda Clark acted for Shane Taurima in the contentious inquiry into his Labour party activities while he was an executive at TVNZ.
Clark's employers at law firm Kensington Swan refused to comment but well-placed sources confirmed she had represented Taurima when he was responding to the inquiry.
She had no role in ongoing discussions between Taurima and the Labour Party about its decision to shut him out of the Tamaki Makaurau candidate section process, sources said.
Clark is a former host of the National Radio's Nine to Noon show, and TVNZ political editor before moving into the law.
She has specialised in providing clients advice on dealing with politicians and at the same time has revived her political commentary career through TV3 current affairs shows such as The Vote and The Nation.
Her joint role of player and commentator highlights something of a trend for television current affairs programmes.