The National Party has decided not to lay a complaint with police about the defacing of hundreds of its election hoardings.
The Green Party on Tuesday named party member Jolyon White as the person who organised for the billboards to be plastered with phrases like 'Drill it! Mine it! Sell it!'
Mr White quit his party membership later that day and his partner Anne Heins has been stood down as executive assistant to Green Party co-leader Russel Norman.
National complained to the Electoral Commission about the vandalism but party president Peter Goodfellow says a further complaint to the police will not be laid.
He said the Electoral Commission is best placed to decide whether there has been a breach of the law and is able to refer the case to the police.