The UDA was formed on 1 March 2006 by the
United Party for National Development (UPND), the
United National Independence Party (UNIP) and the
Forum for Democracy and Development, which between them had won 74 of the 150 elected seats in the National Assembly in the
2001 elections.
Anderson Mazoka, who had finished as runner-up in the presidential elections, was the alliance's leader until his death in May 2006. He was succeeded by
Hakainde Hichilema, also of the UPND. In the 2006 elections Hichilema finished third out of the five presidential candidates with 25% of the vote. In the
National Assembly elections the alliance received 23% of the vote, winning 26 seats. The alliance was dissolved in 2008. ==Election results==