Founded in 2009, MUST participated in the 2012 parliamentary election, and it was under its banner that its president and founder, Claudine Munari, was re-elected in the constituency of Mouyondzi.[3]
On 30 January 2015, the political bureau of MUST spoke out against the proposed constitutional changes of President Denis Sassou Nguesso, which it considers unfounded and inopportune on the eve of a presidential election: "You don't change the rules of the game before the end of the match. Doing so would amount to a constitutional coup that would undermine peace, security and institutional stability".[4]
During the 2016 presidential election, Claudine Munari ran as a candidate under the MUST banner. The only female presidential candidate, she aimed to be "the president of unity and the fight against youth unemployment",[5] and her objective was to "radically change Congo".[6] She received 1.54% of the vote, finishing 7th out of nine candidates, and contested the re-election of Denis Sassou-Nguesso.[7][8]
During the 2017 parliamentary election, the Frocad-IDC opposition alliance, of which MUST is a part, called for a boycott of the elections to protest the crisis in the Pool Department.[9] Claudine Munari therefore did not run for re-election in Mouyondzi and lost her seat. In June 2018, the party was penalised by a 2017 law prohibiting political formations that do not have elected representatives.[10]
During the 2022 parliamentary election, MUST recovered a single seat in the National Assembly with the victory of its founding president in Mouyondzi.[11]
