 Complete the following phrase:  By April 2010, the MUD included around 50 political parties, of which 16 were national in scope and the rest regional, and received support from some other social organisations and opinion groups. The main parties included in MUD are the traditional Democratic Action and COPEI which held power from 1958 to 1998; the left groups Movement for Socialism, Radical Cause and Red Flag Party; and more recently established parties A New Era, Justice First and For Social Democracy PODEMOS. In April the MUD held primaries in 15 electoral districts, with 361,000 voters participating, and selecting 22 candidates the remaining 143 candidates were chosen by consensus. The candidates chosen included Maria Corina Machado of Sumate and Manuel Rosales, the oppositions candidate in the 2006 presidential election and now in exile in Peru due to corruption charges, which he denies. In addition, a number of the nine police officials imprisoned for participating in the 