The UN was established in February 2010 by a merger of the African Development Movement (MAD), the Gabonese Union for Democracy and Development (UGDD) and the National Republican Rally (RNR).
The new party gained support from several prominent former members of the ruling Gabonese Democratic Party, including former Prime Ministers Casimir Oye Mba and Jean Eyeghe Ndong.
[1] Later in February its leader André Mba Obame was elected to the National Assembly in a by-election.
[2] In 2011 the party was banned after Obame declared himself president after refusing to recognise the results of the 2009 presidential elections.
[3] In November 2021 Paulette Missambo, a former Minister of National Education and Health under former President Omar Bongo Ondimba, was elected party president at a meeting of 654 party delegates, succeeding Zacharie Myboto.