Jerjes Justiniano, interim presidential minister, said the government wants to appoint new members to the Supreme Electoral Court, but the move is being blocked by the Movement Towards Socialism (MAS) party, which holds a majority of seats in the Legislative Assembly.
"Unfortunately, no progress has been made with the MAS bloc," said Justiniano. "Without them, it is impossible to take this legislative step. We are looking at other mechanisms that can lead to elections being held as soon as possible."
One possible solution put forward by former Bolivian President Jorge Quiroga is to bypass legislation and issue a "supreme decree."
Bolivia has been plagued by anti-government protests since Morales won a fourth presidential term in the Oct. 20 elections. The opposition refused to recognize his victory, claiming fraud.
Morales announced his resignation on Nov. 10 after the military demanded his departure. He arrived later in Mexico, which offered him political asylum.