Coe's first speech in the ACT Legislative Assembly was on 9 December 2008.
His portfolio responsibilities[2] from 2008 to 2012 were as Shadow Minister for Urban Services, for Transport Services, for Housing, for Heritage, and for Youth. From 2012,[5] Coe's responsibilities included Shadow Minister for Territory and Municipal Services, for Planning & Infrastructure, for Transport, and for Heritage.
In the wake of a fifth consecutive Liberal defeat in the 2016 election, former leader Jeremy Hanson resigned, and Coe was elected as his replacement with Nicole Lawder as his deputy.[6]
Ultimately, the Liberals were defeated at the election, losing 2 seats. Coe conceded on election night, when it became apparent that a Labor-Greens coalition would return to power.[9] On 27 October 2020, Coe was replaced by Elizabeth Lee as Leader of the Canberra Liberals and Leader of the Opposition.[10] On 24 January 2021 Coe announced his forthcoming resignation from the Legislative Assembly, which became effective on 12 March 2021.[11][12][13][14]