The 1917 Victorian state election was held on 15 November 1917. Since the previous election, the Liberal Party had absorbed pro-conscription Labor defectors and become the Nationalist Party. However, the Nationalists contested this election as three competing factions: Ministerialists, the supporters of Alexander Peacock's government; the "Economy Party", supporters of John Bowser; and the National Labor Party, for those ex-Labor members now supporting the anti-Labor side of politics.