Movement for the Liberation of São Tomé and Príncipe/Social Democratic Party

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Movement for the Liberation of São Tomé and Príncipe/Social Democratic Party
Movimento de Libertação de São Tomé e Príncipe/Partido Social Democrata
Abbreviation MLSTP/PSD
Leader Jorge Bom Jesus
Founded 1960
Headquarters Riboque, São Tomé, São Tomé and Príncipe
Ideology Democratic socialism
Social democracy
Political position Centre-left
International affiliation Progressive Alliance,
Socialist International (consultative)
National Assembly
23 / 55
Party flag
Flag of MLSTP.svg
Archived website

The Movement for the Liberation of São Tomé and Príncipe/Social Democratic Party (abbreviated MLSTP/PSD; Portuguese: Movimento de Libertação de São Tomé e Príncipe/Partido Social Democrata) is one of the main political parties in São Tomé and Príncipe. Jorge Bom Jesus is the current president of the party.


Early years[edit]

The party, then called the Committee for the Liberation of São Tomé and Príncipe, was founded in 1960 as a nationalist group opposed to Portuguese colonial rule. In 1961 it joined the CONCP with other communist and socialist groups fighting against the Portuguese empire in Africa. The CLSTP was set up by exiles who eventually established their base in nearby Gabon. Dr. Manuel Pinto da Costa, who would eventually become President of an independent São Tomé and Príncipe, was the leader of the party. In 1972, the CLSTP became the MLSTP.

After the April 1974 Carnation Revolution in Portugal, the new government agreed to hand over power to the MLSTP. Later that year, the MLSTP was recognized as the sole legitimate representative of the Santomean people.

Independence & one-party rule[edit]

Following a brief period of transitional government, elections were held for a constituent assembly and the MLSTP won all 16 of its seats.

Independence was achieved on July 12, 1975, with Manuel Pinto da Costa as President and Miguel Trovoada as Prime Minister. The constitution promulgated on December 12, 1975, effectively vested absolute power in the President and the MLSTP became the nation's sole legal political party.

During the late 1970s and 1980s, the party's socialist orientation and in turn the nation developed strong ties with Cuba, the People's Republic of China, the German Democratic Republic, and the Soviet Union.

Transition to democratic rule[edit]

In late 1989, a progressive faction within the party embarked on a transition to full multi-party democracy, after a debate at the national party conference.

A democratic constitution introduced by the MLSTP Central Committee was approved overwhelmingly in an August 1990 referendum.

At the MLSTP Party Congress in October 1990, Carlos Graça was appointed as the new Secretary-General, in succession to Manuel Pinto da Costa. In addition, the party's name was amended to the Movement for the Liberation of São Tomé and Príncipe/Social Democratic Party (MLSTP/PSD).

In an extraordinary Congress of the MLSTP/PSD held in May 1998, Manuel Pinto da Costa was elected unopposed as President of the party, a post that he held until 2005.

At the party's Fourth Congress, Guilherme Posser da Costa, a former Prime Minister, was elected as President of the MLSTP-PSD on 27 February 2005, succeeding Pinto da Costa. There were 708 votes in favor of Posser da Costa, who was the only candidate, and three votes against him.[1] As of June 2008, the President of the MLSTP/PSD is Joaquim Rafael Branco.[2]

In June 2008, after Prime Minister Patrice Trovoada of the Independent Democratic Action (ADI) party was defeated in a vote of no confidence, President Fradique de Menezes asked the MLSTP/PSD to form a government, and it chose Branco to become the next Prime Minister.[2] The ADI denounced Menezes' designation of the MLSTP/PSD to form a government as unconstitutional, arguing that it was too late in the parliamentary term to do so, and it took the matter to the Supreme Tribunal of Justice.[3]

The Current president of the MLSTP-PSD, Aurelio Martins, was elected on 15 January 2011 in the V Usual Congress of the Party.

Today the MLSTP/PSD has friendly relations with political parties in other Lusophone countries, including the Socialist Party (PS) in Portugal and the Popular Movement for the Liberation of Angola/Labour Party (MPLA/PT).

Performance in recent elections[edit]

In the nation's first democratic elections, held in January 1991, the party suffered a defeat at the polls capturing only 30.5% of the vote and 21 seats in the 55-member National Assembly.

December 1992 local elections resulted in the MLSTP/PSD gaining control of five of the country's seven provinces.

In the 1994 Legislative elections, the party received 37% of the vote and regained control of the National Assembly winning 27 of the 55-seats, one short of an absolute majority.

March 1995 elections to the newly created seven member assembly on the smaller island of Príncipe resulted in another victory for the party.

Manuel Pinto da Costa ran as the MLSTP/PSD candidate in the 1996 Presidential election. In the first round, he came in second behind the incumbent President Miguel Trovoada, winning 39% of the vote to Trovoada's 41%. In the second round he was defeated by Trovoada who captured 52.7% of the vote to his 47.3%.

In the 1998 legislative elections, the MLSTP/PSD won 50.6% of the vote and increased its majority in the National Assembly from 27 to 31 seats.

In the July 2001 Presidential election, Manuel Pinto da Costa again attempted to regain the presidency, but was soundly defeated by businessman Fradique de Menezes 55.2% to 40.0%.

March 2002 legislative elections maintained the MLSTP's status as the largest party in the National Assembly, but only by one seat. The party received 39.6% of the vote and won 24 of the 55-seats.

In the legislative election, held on 26 March 2006, the party finished second behind the Force for Change Democratic Movement-Democratic Convergence Party (MDFM-PCD) coalition, winning 20 out of 55 seats.

The party did not field a candidate in the 30 July 2006 presidential election, opting to join a coalition of parties supporting Patrice Trovoada of the Independent Democratic Action (ADI) party. He was defeated by the incumbent Fradique de Menezes, winning 38.82% of the vote to de Menezes' 60.58%.

In the most recent parliamentary elections held on August 1, 2010, the MLSTP became the second largest party (behind ADI), winning 21 seats. In 2011, Pinto da Costa finally succeeded in regaining the presidency, although officially running as an Independent.


  1. ^ "Election de maréchal pour Guilherme Posser da Costa",, February 27, 2005 (in French).
  2. ^ a b "Líder da oposição em São Tomé Príncipe designado primeiro-ministro", Panapress, June 12, 2008 (in Portuguese).
  3. ^ "Partido de PM destituído contra nomeação de novo Governo são-tomense", Panapress, June 16, 2008 (in Portuguese).