Following the death of Rod Donald, Tánczos stood for the leadership of the Green Party but was defeated by Russel Norman. On 17 January 2008 Tánczos announced he would not be standing in the 2008 election. It was initially not clear when he would resign his seat as he intended to see his member's bill, the Waste Minimisation Bill, through Parliament. The bill was due back in the house in March 2008, after passing its first reading with Government support in 2006. He also wanted Russel Norman the Greens co-leader to enter Parliament in his place (because of the advantages in having the co-leader in Parliament in an election year); ex-MP Mike Ward, who was above Norman on the party list, initially declined to stand aside but changed his mind.