 Grylls easily won with seat with 61.5% of the two-party-preferred vote.On 17 November 2013, Grylls announced he would be resigning as leader of the WA Nationals, and from the Barnett cabinet.He retook the leadership in August 2016, and subsequently introduced a plan to tax BHP Billiton and Rio Tinto $5 for every tonne of iron ore mined (as opposed to $0.25 currently).