In the 2010 general election, Hamilton stood as a candidate for the People's Action Movement (PAM) and was successfully elected to the National Assembly in the St Christopher #8 constituency.[2] He was re-elected at the 2015 and 2020 elections. He is the former deputy leader of PAM and was a Cabinet Minister in the Team Unity government from 2015-2022, serving as Minister of Agriculture, Health and National Health Insurance, Human Settlements, Community Development, Gender Affairs, Social Services, Lands and Cooperatives from February 2015 to June 2020 [3] and as Minister of Human Settlement, National Health; Insurance, Social Security, Ecclesiastical Affairs, Social Development and Gender Affairs from June 2020 to August 2022[4]
From May 2022 until the snap 2022 general election in August, he also served as the Deputy Prime Minister of Saint Kitts and Nevis and took on ministerial responsibilities for Public Infrastructure, Posts and Urban Development.[5][6] He did not run for re-election in the snap election and retired from politics,[7] and his seat was gained by Labour leader Terrance Drew, who now serves as Prime Minister of the federation.