[3] Finn was the Member for the District of Tullamarine from 1992 until 1999 when he lost his seat in the Steve Bracks led victory over the Kennett Liberal Government.

[1] During the period of the Baillieu and Napthine governments, Finn served as Chairman of the Victorian Parliament's Electoral Matters Committee.

"[19][20][21] Finn is a climate change denier and was a critic of the Gillard government's carbon pricing scheme, stating in the Victorian Parliament in 2013 that "there has been no global warming for 17 years".

[23] Finn is a regular panellist on conservative television channel Sky News Australia and a frequent critic of the Black Lives Matter movement, climate science and members of what he views as ‘the left’, including American Democrats and the Australian Labor Party.

[24] In January 2021, Finn was criticised for sharing conspiracy theories to his private Facebook page, falsely claiming Donald Trump was being "improperly" removed from office.

[25][26] In February 2021 Finn, addressing the Reignite Democracy Australia Facebook group, criticised the COVID-19 pandemic lockdown measures imposed by the Victorian government, saying that maybe they were about hardline socialists' dislike of small businesses.

[27] In May 2022, Finn expressed on Facebook that he is “praying” for abortion to be banned in Australia, following the release of the SCOTUS draft decision written by Justice Samuel Alito in Dobbs (19-1392).