The relationship between perception and voting behavior is very important for election case research to study how the electorate respond to the change of political circumstance. There are three major method to approach the fact. First psycological approach is saying that electorate apply their stero type for the candidate. Their judgement is depend on whether the candidate accept their key value and requirement . Second, Socialogical approach is putting much importance on the party identification and role of political party.  The members of society are divided according to their indiviual interest and ideology after large social grouping take place. At that moment, the perception which influence voting behavior  is determined. Third the rational approach is that the perception is resulted in voting behavior accuratelty. And this theory is assume that the electorates are rational and reasonable. So this theory said that electorates are able to anlysis every political factor in detail.