Denise Mitchell is a Sinn Féin TD for Dublin Bay North, where she was first elected in 2016. She is the party's spokesperson for Local Government and Reform. A Dublin City Councillor between 2014-2016, she has also served as the party's spokesperson for Social Protection, Children & Youth Affairs. She was also a prominent campaigner for the 'Right to Water' and 'Repeal the 8th' movements.