[3] In his maiden speech Madden stated that perhaps his proudest achievement was, along with his late mother, successfully reviving the tradition of the discontinued Anzac Day service at Woodend in 1999, which now attracts a crowd of 1,000 people.

[10] In October 2015, Liberal National member Ian Rickuss called some Labor MPs, including Madden, "drag queens".

"[11] In December 2015, Madden stepped down from Parliament's ethics committee after taking responsibility for a suspected leak.

[13] In February 2016, Madden supported the proposed lockout laws since be believed they were proven effective elsewhere and would address alcohol-fuelled violence.

[14][15] In March 2017, Madden supported the Criminal Law Amendment Bill which removed "unwanted sexual advancements" as a partial defence for defendants accused of murder.

[16] In October 2018, he voted in favour of a bill which made abortion available, on request, up to 22 weeks' gestation and introduced "safe access zones" of 150 metres around clinics.