Former Coalition frontbencher Sophie Mirabella says she's finished in frontline politics and will turn her focus to being a commentator.

Speaking after her second consecutive defeat in the Victorian seat of Indi, the conservative Liberal blamed unions, activist groups and "Melbourne-based feminists" for her loss on July 2, as independent MP Cathy McGowan recorded a 4.5 per cent swing in the regional seat.

"I'll always have an interest and I will always support good people because I think that's important but it's time to think of my family and to do other stuff," Mrs Mirabella told Sky on Monday night.

"I'm young. I've got a lot of experience, a lot of skills and I'll be on this side and be a commentator rather than a participant."