Abbas's expected reappointment came at the end of a four-day meeting by the Palestinian National Council in Ramallah in the occupied West Bank early Friday.
Saeb Erekat, secretary general of the Executive Committee of the Palestine Liberation Organization (PLO), said on Thursday that he was "deeply disturbed" by accusations suggesting that President Mahmoud Abbas is an anti-Semite and that he is opposed to peace negotiations.
Last month the PLO's Central Council called on the Executive Committee to suspend recognition of Israel until it recognizes the state of Palestine and halts the building of Jewish settlements on Palestinian land, yet a statement to this effect was not issued by the body during this week's convention.
He also did not directly address the upcoming United States move of its Israeli embassy from Tel Aviv to Jerusalem, a decision that prompted the Palestinians to boycott the Trump administration.
Delegates also elected new members to the main leadership body, voting out some of the remaining Abbas critics.
Abbas, 82, is thought to have achieved most of his goals at the meeting, including the removal from the committee of some of his rivals, including Yasser Abed Rabbo and former Palestinian Authority prime minister and negotiator Ahmed Qurei.
The PLO, an umbrella group which is dominated by Abbas´s Fatah party and includes most Palestinian factions but not Hamas, represents the Palestinians internationally.
The four-day meeting was held in the absence of Hamas, Islamic Jihad and the PFLP.