The MDP is now the largest party with more than 50,000 members.
Polls open at 8am on Saturday morning.
The PPM says it has not been able to campaign for the April 6 polls.
Habeeb was appointed to the five-member commission for a second term.
Opposition parties called for a postponement over former president Yameen's arrest.
The new party is trying to complete registration in time to field candidates for the parliamentary elections.
January 28 is the tentative date to start accepting applications from candidates.
Former president Yameen was elected as the PPM's leader at an extraordinary congress.
The Elections Commission warned MVR80 million was not enough for the parliamentary elections in March.
The number of constituencies rises to 87.
The PPM asked the High Court to order the Elections Commission to recognise its new leadership.
The PPM has been fined US$4,860 for accusing Elections Commissioners of bribery and vote rigging.
The Supreme Court was undecided on hearing from secret witnesses.
The Supreme Court wrapped up hearings on the disqualification of MPs Abdulla and Sinan.
The Elections Commission is accused of vote rigging at nightly protests by the ruling party.
A commissioner has left the country after threats, EC chief Ahmed Shareef said.
The ruling party has demanded an investigation into alleged graft by the Elections Commission chief.