The KPP was established as a breakaway from the Kamerun National Congress (KNC), when a faction led by Nerius Mbile, P. M. Kale, and Motomby-Woleta disagreed with KNC leader E. M. L. Endeley's decision to demand autonomy from the National Council of Nigeria and the Cameroons.
[1] The KPP received 20% of the vote in the 1957 parliamentary elections, winning two of the 13 seats.
[2] The 1959 elections saw the KPP run in an alliance with the Kamerun National Congress (KNC).
The alliance received 37% of the vote, winning 12 of the 26 seats, of which the KPP took four.
The KPP and KNC merged in 1960 to form the Cameroon People's National Convention.