The Samoan government is seeking to change the way heads of state are appointed in a new constitutional amendment bill.
The current system allows each MP to put forward a name for the position which is then voted on.
But prime minister Tuila'epa Sa'ilele Malielegaoi said this could be a difficult process in the future because of the current political party system in practice.
He said under the new amendment, the ruling party or parties can nominate one candidate as head of state for Parliament's endorsement.
Our correspondent says the appointment of a speaker and deputy speaker will also be choosen the same way.
The amendment needs a two thirds majority vote in the house to be passed.
The Opposition has questioned the reasons behind the government's amendments saying there is nothing wrong with the constitution.