[1] McFetridge resigned from the Liberals and moved to the crossbench as an independent in May 2017 after losing endorsement for Morphett pre-selection ahead of the 2018 election.

He has been a member of three House of Assembly Select Committees – Jumps Racing; Dogs and Cats as Companion Animals; and Review of the Retirement Villages Act 1987.

Dr McFetridge had previously held the Shadow Portfolios of Communities & Social Inclusion, Disabilities, Emergency Services, Veterans' Affairs, Aboriginal Affairs & Reconciliation, Social Housing, Volunteers, Mental Health & Substance Abuse, Suicide Prevention, Youth, Transport & Infrastructure, Police, Correctional Services, Road Safety, Health, Industrial Relations, Science & Information Economy, Industry & Trade, Education & Children's Services, the Arts, Tourism, Local Government, Recreation & Sport, Consumer Affairs, and Small Business.

After 13 years, Dr McFetridge lost his position in the Steven Marshall shadow cabinet and moved to the backbench in January 2017.

[3] He was pushed into third place on the primary vote, but his preferences flowed overwhelmingly to Patterson, allowing the Liberals to reclaim the seat.