In April 2013, the Labour Party and the Green Party said if they were to win the 2014 election, they would introduce a single buyer for electricity, in order to cut retail costs. The Government responded by calling it "economic vandalism", comparing it to the Soviet Union, but Greens co-leader Russel Norman said it would boost the economy and create jobs. By the following day, shares in privately owned power company Contact Energy had fallen by more than 10 percent. The general election held on 20 September 2014 was won by the National Party. Share prices of listed electricity companies rose significantly when the share market opened on the Monday following the election.