The Vaimauga West by-election was a by-election in the Samoan constituency of Vaimauga West. It took place on 6 May 2007, and was precipitated by the death of MP Sililoto Tolo Tuaifaiva.[1]
Ten candidates contested the election, eight of them on behalf of the ruling Human Rights Protection Party.[1] The election was won by Patu Ativalu. While previously a member of the Samoa Democratic United Party, Ativalu announced his intention to join the HRRP if elected, after a request from his village.[1] Following the election Ativalu was accused of bribery and treating, but no election petition was filed.[2]