Preferential voting was first put to use in the Corangamite by-election for the Victorian seat of Corangamite two months later, and Labor candidate and future Prime Minister James Scullin topped the primary vote, only to be defeated after distribution of preferences by William Gibson of the Victorian Farmers' Union. The preferential voting system remains in place and has helped to support a fairly stable three-party system, with the anti-Labor parties (presently the Liberal Party of Australia and the National Party of Australia) regularly forming coalition governments.