After realignment of riding boundaries, he was re-elected at the Blackstrap electoral district in the 1997 federal election.
He entered provincial politics in June 2003 when he won a by-election at the Carrot River Valley riding succeeding Carl Kwiatkowski whose death left the provincial electoral district vacant.
[3][4] Later that year, Kerpan was re-elected in the general provincial elections, after the boundaries of Carrot River Valley were realigned.
[5] Kerpan was succeeded in the riding of Carrot River Valley by the Saskatchewan Party's Fred Bradshaw.
[6] Following the 2019 federal election, Kerpan became involved with the Western separatist movement known as Wexit Canada,[7] later renamed the Maverick Party.