It is huge and with lots of exhibits. It took me > 2hrs to visit the entire museum. One of the exhibits, cabbage made from jade is very impressive.
FYI, parliament dissolved this morning. You can registered as postal voters latest by 1159pm (Malaysia time, GMT+8) today.
More info, visit the SPR website-> http://www.spr.gov.my/
p/s: Very likely SPR website will be down. You could download application form, FAQs, guideline at: