In 2001, Sabino was elected as a PD candidate to the Constituent Assembly of East Timor, from which the
National Parliament emerged in 2002. On 31 August 2007, he had to give up his seat in accordance with the Constitution, when he was sworn in as Minister of Agriculture, Forestry and Fisheries in the
IV Constitutional Government headed by
Prime Minister Xanana Gusmão. In August 2008, an investigation of corruption allegations against Sabino and another Minister,
Lúcia Lobato, was initiated by , Deputy Provedor of the
Office of the Provedor for Human Rights and Justice ( (PDHJ)). However, Sabino remained in his Ministerial office throughout the IV and
V Constitutional Governments, each headed by Prime Minister Gusmão, until 16 February 2015, when the latter government was replaced by the
VI Constitutional Government led by Prime Minister
Rui Maria de Araújo. In October 2015, the Timor-Leste Chamber of Auditors accused Sabino of "possible financial breaches", which were said to have resulted in possible losses of more than USD 11 million between 2011 and 2014. In some cases, according to an audit to the Ministry of Agriculture and Fisheries, contracts for the supply of goods and services were made with companies close to Sabino, without complying with the required procedures. In
2017, Sabino was re-elected to the National Parliament, as the list leader in the PD list. However, on 3 October 2017 he was sworn in as Minister for the Council of Ministers in the
VII Constitutional Government led by Prime Minister
Mari Alkatiri, and therefore again had to give up his seat in accordance with the Constitution. As that Fretilin / PD minority administration could not prevail in the National Parliament,
President Francisco Guterres dissolved the Parliament and called
a fresh parliamentary election. In the election, held on 12 May 2018, Sabino was again number 1 on the PD list, and was again elected to Parliament, in which the PD initially became part of the opposition. Sabino's tenure as a Minister ended when the
VIII Constitutional Government took office on 22 June 2018. , Sabino was a member of the Parliamentary Committee for Economy and Development (Committee D). On 1 July 2023, upon the commencement of Prime Minister Gusmão's third term in that office, as leader of the IX Constitutional Government, Sabino was appointed as the less senior of two Deputy Prime Ministers, alongside
Francisco Kalbuadi Lay. ==Personal life==