 NDPL yakaumbwa muna Nyamavhuvhu 1984 nevatsigiri vaSamuel Doe, uyo akauya kuzotonga muna 1980 coup détat. Bato racho rakakwikwidza musarudzo huru dza1985 naDoe semumiriri waro wemutungamiri wenyika. Akakunda 50.93 yemavhoti musarudzo yakasvibiswa nekupomerwa kwekusawirirana kwakakura uye kubiridzira kwesarudzo. NDPL yakatonga dzimba mbiri dzeParamende, ichikunda zvigaro 21 pa26 muSeneti uye 51 pa64 muImba yeVamiriri. Kutonga kwebato munyika kwakapera zvichitevera kutanga kweHondo Yenyika Yekutanga yeLiberia muna 1989 uye kuurayiwa kwaDoe muna 1990. 