Prior to entering parliament as the member for the newly created seat of Joondalup, he was a barrister, solicitor and proprietor of a law firm.
He lost the seat at the February 2001 state election to his Labor rival, Tony O'Gorman.
[1] On 5 May 2001, Baker was elected as councillor for the Marina ward of Joondalup with an overwhelming majority of votes.
[3] He was one of a group of councillors who supported the controversial CEO, Denis Smith, and was criticised by the inquiry into the City of Joondalup.
[1] On 19 October 2019, Baker was elected as a Councillor at the City of Wanneroo for the North Coast Ward, defeating incumbent Russell Driver by 5.82%, or 1,131 votes, and secured 3.25% more votes than incumbent Natalie Sangalli, who was re-elected to the second vacant position.