Fearon was selected by her party to succeed her party colleague Conor Murphy, an abstentionist MP in the parliament of the United Kingdom, who had resigned from the Assembly as part of Sinn Féin's policy of abolishing double jobbing.
At the time of her selection, Fearon had just completed her last year at Queen's University Belfast, where she took a degree in Politics, Philosophy and Economics.[1] Before her selection, Fearon had campaigned for Sinn Féin and had worked to raise mental health and drug awareness.[1] She replaced party colleague Chris Hazzard as the youngest MLA.
Fearon was a member of the departmental scrutiny committees for Finance, Economy, and the Office of the First and deputy First Minister.
She was an advocate for equality, particularly supporting causes like LGBTQIA+ equality, and abortion rights. Fearon served as Chairperson of the Northern Ireland Assembly Women's Caucus and was vice-chair of the APG on UNSCR 1325 Women, Peace and Security. Additionally, she served as a member of various other APGs, including those focused on Children and Young People, Domestic and Sexual Violence and Abuse, and Fair Trade.
Fearon was re-elected in the 2016 and 2017 Northern Ireland Assembly elections. In May 2016 it was announced that she is among four Sinn Féin MLAs who will be joining the next Northern Ireland Executive as ministers.[3]
Fearon was re-elected in the 2016 election.[4] It was subsequently announced that she is among four Sinn Féin MLAs who will be joining the next Northern Ireland Executive as ministers.[3]
In December 2019, Fearon announced that she was stepping down as a Sinn Fein representative and that while she would remain an activist, her time in elected politics was over.
