Malaysia's parliament Tuesday backed lowering the voting age from 21 to 18, a change that would add millions of people to the electoral roll and was pushed by the country's reformist government.The Southeast Asian nation is one of a handful of countries around the world that limits voting to those aged over 21, and the change still has to be debated and passed in the country's senate before it can become law.The overhaul was championed by the government of Prime Minister Mahath