use ur vote??

Aamir Khan came up saying use your voting power and vote for correct person...i think even i m 18 above and even i should vote but the problem is whom should i vote for...my dad always voted for **** and i don't know why....I am not biased nor do I support any other party....but the real truth is if one party is Ravana the other is Kumkaran..ie.one party sleep during their whole term and the other just perform bad acts during their term..can anyone suggest me whom should i vote for..???