However, after the formation of the government of Prime Minister Yahya Ahmed Ould El Waghef in May 2008, the party left the presidential majority in June 2008, objecting to the composition of the government. It said that, while the opposition had been brought into the government, the UDP had been marginalized; the party also said that "the hope for change born on August 3, 2005 has been compromised", referring to the ouster of President Maaouya Ould Sid'Ahmed Taya on that date.[1]