Early voting began for nearly 279,000 Royal Malaysian Police, Armed Forces and Special Task Force personnel and their spouses.
The process was conducted at contingent police headquarters, district police headquarters and army camps by 6,376 election workers.
The polling stations will be closed in stage between 17:00 and 19:00 while some will close earlier between 13:00 and 15:00.
The votes are not counted on May 5 and the ballot boxes will be kept safely in the police station lockups.
A total of 14,940,624 voters are expected to cast their ballots in the 14th general election, which will pit current Prime Minister Najib Razak against former Prime Minister Mahathir Mohamad.
If winning the election, Mahathir Mohamad, 92 years old, will become the oldest Prime Minister in the Malaysian history.
More than 64,000 policemen will be arranged to ensure security for the general election.-VNA