He was a member of the South Australian House of Assembly from 1918 to 1938, representing the electorate of Wallaroo.
Pedler was a contractor and carter thereafter until 1900, when he inherited the farm and returned to run the property, becoming a successful wheat grower.
Pedler and Richards defeated two ex-Labor defectors, former Premier John Verran and John Frederick Herbert, who had been expelled from the Labor Party in the 1917 Labor split and had contested the election for the splinter National Party.
[9] In 1938, the state abolished multi-member districts for the House of Assembly, and established single-member electorates instead.
Pedler lost a Labor preselection vote for the new single-member seat of Wallaroo to Richards, and opted to retire from parliament.