New Greens senator Jordon Steele-John is the youngest person ever to sit in the Senate.

He was sworn in this week with two other “accidental” senators who gained their seats from the citizenship crisis.

He talks to Michelle Grattan about coming to Canberra for the first time since he was a baby, his political passion, and his commitment to promote his causes: youth and disability issues.

Michelle Grattan does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.