During his years within the Social Democratic Youth, Baptista Leite served as Director of the National Studies Cabinet and as member of local and district political committees. He also chaired two educational courses, in 2005 and 2009, on local governance promoted by the Social Democratic Party. In the 2009 course, Leite promoted a debate between two former Prime Ministers of Portugal, and . Baptista Leite is a member of the Parliamentarians for Global Action Network, the 2015 European Young Leaders Programme, and he is to date the only Portuguese citizen to have been invited to be part of the European Leadership Network. He was also a member of the healthcare policy work group at the Francisco Sá Carneiro Institute, at the time presided over by . By invitation from the Institute's President, , Baptista Leite has been a member of the Institute's General Assembly, which is led by Portugal's former Prime Minister Francisco Pinto Balsemão. He is now an elected member of the Institute's Supervisory Board. Baptista Leite is the main author of "Strategic Consensus on Integrated Management of Hepatitis C in Portugal", published as a book in May 2014. He is also the main author of the book "Citizenship for Health", which is focused on the role of citizens in health promotion and disease prevention.