Social Democratic Party

Leader: Francisco Sá Carneiro (24 November 1974 – 25 May 1975), Emídio Guerreiro (25 May 1975 – 28 September 1975), Francisco Sá Carneiro (28 September 1975 – 11 November 1977), António de Sousa Franco (11 November 1977 – 15 April 1978), José Menéres Pimentel (15 April 1978 – 2 July 1978), Francisco Sá Carneiro (2 July 1978 – 4 December 1980), Francisco Pinto Balsemão (13 December 1980 – 27 February 1983), Nuno Rodrigues dos Santos (27 February 1983 – 25 March 1984), Carlos Mota Pinto (25 March 1984 – 10 February 1985), Rui Machete (10 February 1985 – 19 May 1985), Aníbal Cavaco Silva (19 May 1985 – 19 February 1995), Fernando Nogueira (19 February 1995 – 31 March 1996), Marcelo Rebelo de Sousa (31 March 1996 – 1 May 1999), José Manuel Durão Barroso (2 May 1999 – 30 June 2004), Pedro Santana Lopes (30 June 2004 – 10 April 2005), Luís Marques Mendes (8 April 2005 – 12 October 2007), Luís Filipe Menezes (12 October 2007 – 20 June 2008), Manuela Ferreira Leite (20 June 2008 – 9 April 2010), Pedro Passos Coelho (9 April 2010 – 16 February 2018), Rui Rio (16 February 2018 – 1 July 2022), Luís Montenegro (since 1 July 2022)