Causes of Fallover of BN

Perceived weakness of the government ( and its leadership) in tackling the street issues
The rakyat was constantly awed by the mainstream media reporting of the government 's weaknesses in solving basic on the street issues like crime, rising costs of goods and services,race relations, corruption in the police force, judiciary and the government machinery.
The rakyat had to vent their anger and frustration and found it by casting protest votes in the ballot boxes.