He was elected to the Norwegian Parliament from Oppland in 2001, but was not re-elected in 2005. During the second cabinet Stoltenberg, Bjørklund was appointed political advisor in the Ministry of the Environment, a post he left after three months.
On the local level Bjørklund was a deputy member of Nordre Land municipality council from 1991 to 2003. He chaired the local party chapter from 1999 to 2001.
He has been active in the Norwegian Society for the Conservation of Nature.