Career
He was the Reform Party House Leader from 1993 until 1995. Due to redistribution his hometown was located in the new constituency of Saskatoon—Rosetown—Biggar for the 1997 election. He ran against fellow incumbent Chris Axworthy of the New Democratic Party for the new seat and lost.
Hermanson sought the leadership of the newly founded Saskatchewan Party in 1998, and defeated Rod Gantefoer and Yogi Huyghebaert in a one member one vote election.
He was elected to the provincial legislature for Rosetown-Biggar in the 1999 provincial election and became Leader of the Opposition. Ultimately, this left the Saskatchewan Party five seats short of making Hermanson Premier.
Hermanson was widely expected to lead the party to victory in 2003. While the Saskatchewan Party scored a Netto gain of two seats, both in Saskatoon, it was shut out of Regina once again.
Hermanson resigned days after the election and was subsequently succeeded by Brad Wall.
Hermanson remained the Modern Language Association for the new constituency of Rosetown-Elrose. On Friday, June 23, 2006, Hermanson announced that he would not be seeking re-election to the legislature.