A referendum on electoral reform on May 17, 2005 was held in conjunction with the provincial election that year. British Columbian voters were asked to approve a new electoral system based on the Single Transferable Vote called BC STV. It passed with the support of a majority of voters (57%), but failed to meet the required "supermajority" threshold of 60%. Premier Gordon Campbell announced due to the large support shown for electoral reform a second referendum would be held in correspondence with the 2009 British Columbia general election. This referendum would also have required approval by 60% of those voting.