Career
He was elected to Telemark county council in 2011 where he served as deputy mayor. In the Norwegian parliamentary election, 2013, he was nominated in the third spot on the Telemark Labour ballott. Eskildsen had the support of Skien Labour party and Telemark Labour Youth, while Bjørnø was supported by Porsgrunn Labour Party and several other district branches where a major argument in favour of Bjørnø was that he was situated in Telemark as opposed to Pedersen who had lived in Oslo for a long time.
In the general election, Labour Party got three representants from Telemark and Bjørø became representative number 5 from Telemark.
Bjørø is the son of TV2 journalist Signe Tynning and the grandson of Conservative politician Torstein Tynning.