 Falinski has been involved in non-parliamentary politics for more than twenty years, including as an adviser to former Liberal leaders John Hewson and Barry O'Farrell, and was a spokesperson for the Australian Republican Movement.Falinski formerly sat on Warringah Council (elected September 2008).In April 2016, Falinski won a preselection battle over the incumbent member, former Speaker Bronwyn Bishop, to represent the Liberal Party of Australia at the 2016 Australian election in the safe Liberal seat of Mackellar.