The Samoan Democratic United Party (SDUP) was the main opposition party of Samoa from 2003 to 2008. The SDUP was formed in 2003 from the Samoan National Development Party (SNDP) and the Samoan United Independent Party (SUIP). During the 2006 Samoan general election, they won 10 of the 49 seats, but one member lost his seat after an election petition ruling in August 2006.