[1] When the Solomon Islands United Party (SIUP) government fell in 1981, Mamaloni was able to form a coalition government with the National Democratic Party and independent MPs and became prime minister.
The PAP won a landslide victory in the 1989 elections, taking 23 of the 38 seats and Mamaloni became prime minister again.
However, SIGNUR leader Francis Billy Hilly lost a vote of no-confidence in 1994 and Mamaloni was elected prime minister in his place.
The PAP won only seven seats in the 1997 elections, resulting in Mamaloni returning to being Leader of the Opposition, a post he held until his death in 2000.
In the 2006 elections, the party was reduced to three seats in a Parliament dominated by independents.