He was elected as the first Sinn Féin member of Carrickmacross Town Council in County Monaghan in 1999, becoming the youngest elected representative in the country (21 years old) at the time. In June 2006, Carthy was elected as the first Sinn Féin Mayor of Carrickmacross Town Council. He was a member of
Monaghan County Council from 2004 to 2014, and was elected mayor of Monaghan County Council in 2008. At the
2014 European Parliament election, Carthy won 17.7% of first-preference votes. He took the third of four seats in the
Midlands–North-West constituency. Former
Provisional IRA member
Thomas McMahon, who was convicted of the murder of
Lord Louis Mountbatten and three others off the coast of Mullaghmore, County Sligo, in 1979, canvassed for Carthy in the elections. In the
European Parliament Carthy is a member of the Agriculture and Rural Affairs Committee (AGRI) and the Special Committee on Financial Crimes, Tax Evasion and Tax Avoidance (TAX3). He is a substitute member of the Economic and Monetary Affairs Committee (ECON) and Transport and Tourism Committee (TRAN). He was a full member of the Panama Papers Committee of Inquiry for its duration from 2016 to 2017. In 2015, he was appointed as Sinn Féin's Uniting Ireland project coordinator. He has been party whip in the European Parliament since 2014 and has been a member of the Ard Chomhairle (national executive) at regular intervals since 1998. He was the Sinn Féin Director of Elections for the
2016 general election. On 26 April 2018, Carthy was selected to run as the Sinn Féin candidate for
Cavan–Monaghan at the
2020 general election, following the announcement by sitting Sinn Féin TD
Caoimhghín Ó Caoláin that he would not be contesting the next election. Carthy was elected on the first count.
Sligo County Councillor
Chris MacManus was nominated to fill Carthy's seat in the
European Parliament following his election to the Dáil. At the
2024 general election, Carthy was re-elected to the Dáil. He was subsequently appointed Cathaoirleach of the Committee on Justice, Home Affairs and Migration. ==References==