Mauritanian Progressive Union

The UPM was established in February 1948,^[1] in order to form a more conservative and regionally-based opposition to the Mauritanian Entente party.^[2] The first election contested by the party was the 1951 French National Assembly elections, in which its candidate N'Diaye Sidi el Moktar [fr] defeated the incumbent MP Horma Ould Babana. The following year Moktar Ould Daddah became party leader.^[3] The Territorial Assembly elections that year saw the UPM won 22 of the 24 seats.^[4]

N'Diaye was re-elected in the 1956 French elections, receiving 84% of the vote. The 1957 Territorial Assembly elections saw the party win 33 of the 34 seats.^[3]

In 1958 the party merged with the Mauritanian Entente and the Gorgol Democratic Bloc to form the Mauritanian Regroupment Party.^[5]