UDP) is a political party in the Gambia, founded in 1996 by 3 political parties (the then-banned PPP, NCP and GPP) and choose the human rights lawyer, freedom fighter, ANM Ousainou Darboe to be the party leader and Secretary General.

In the 25 January 2007 parliamentary election, the party won four out of 48 seats.

[2] After Darboe was jailed in April 2016 for his political activities in opposition to the ruling government of Yahyah Jammeh[3] and his Alliance for Patriotic Reorientation and Construction party, the previous UDP deputy treasurer Adama Barrow was selected as its leader and candidate for the 2016 presidential election.

Barrow officially resigned from the party to allow him to run as a formally independent candidate endorsed by the Coalition.

When Jammeh refused to accept the election result, he was forced from office by a regional military intervention, and when Barrow won the election, Darboe was released from prison.