At the time of his election to the House of Commons of Canada he had been a member of the RCMP for 18 years, all of which was spent in Saskatchewan, and has attained the rank of sergeant.
Clarke sponsored the Indian Act Amendment and Replacement Act as a private members bill.
The bill became law in December 2014.In the 2015 Canadian Election, Clarke was defeated by NDP candidate Georgina Jolibois by 1,190 votes.