Josh Frydenberg is facing fresh questions about a return to federal politics while promoting his memoir, "A Grateful Son." The response from Liberal MPs has been lukewarm, and Barnaby Joyce was blunt, calling a Frydenberg leadership push "very bad." John Howard turned heads at the launch with a cheeky remark about his former treasurer's ambitions.

Some political commentators have thrown their support behind Frydenberg over other potential Liberal candidates, but no formal move has been confirmed. Frydenberg has also stood by the significant expenditure that occurred under his watch as treasurer, putting fiscal policy back on the table alongside the broader political maneuvering.