[8] Berkman's political career began in the 2015 Queensland state election where he ran for the Greens in Ferny Grove, achieving a primary vote of 12.11%.

Prior to its abolition, the Indooroopilly electorate was briefly held by a Greens MP, Ronan Lee, after he defected from the Labor in 2008 in the middle of a parliamentary term.

In 2018, Berkman introduced a private member's bill to ban all political donations from businesses to state and local government politicians, candidates and parties, excluding charities and employee or employer organisations.

The Crime and Corruption Commission did not support the bill; however, Commissioner Alan MacSporran said it was his personal view that in an ideal world all donations would be banned.

[17] Berkman has opposed youth crime bills that would override the Human Rights Act and make breach of bail by juvenile offenders a criminal offence.

[18] In March 2023, during the debate on the youth crime bill, he tabled claims of human rights abuses that had allegedly occurred at the Brisbane Watch House.