In October 2000, the Union of Democratic Forces-New Era, which was led by Daddah, was dissolved by the Mauritanian Government for allegedly inciting violence and harming the country's interests.

In its place the Rally of Democratic Forces was established, and Daddah was elected its president in January 2002.

Daddah declared the RFD to be "the country's biggest political force" after the first round of the 2006 Mauritanian parliamentary election, held on 19 November.

[5] Daddah said on May 7, 2008, that the RFD would not participate in the government of Prime Minister Yahya Ould Ahmed El Waghef, despite Waghef's consultations with opposition parties regarding the formation of a new government.

Daddah described the coup as "a movement to rectify the democratic process" and alleged that the 2007 presidential election was "marked by fraud".