Bighorse was elevated to interim principal chief of the Osage Nation after the 2014 impeachment of John Red Eagle and replaced later that year by Geoffrey Standing Bear.
[8] In March 2006, he was the only Democratic Party candidate for the 36th district seat of the Oklahoma House of Representatives.
[9] After Jack Rankin entered the race, Bighorse defeated him in a party primary election four months later.
[17] Following his single term as a state representative, Bighorse began campaigning for the 2010 Osage Nation tribal election in August 2009.
[20] Bighorse served as principal chief until Geoffrey Standing Bear assumed the role on 2 July 2014.