ABSTRACT The definition of economic voting by Lewis-Beck indicates constituency can cast a ballot for the benefit of the ruling party while they definitely confirm economic performance by past; vice versa. The study also expresses Western democratic countries periodically hold the Election of Central Administration Leading Cadre and the Legislative Election; furthermore, it shows in response to economic voting during constituency go into deciding by ballot at the meantime. Seeing that documents of the research in Taiwan of voting behavior among constituency much focus on national identification, political party and candidate characteristics; the other way round, less focus on economic performance or economic governance ability. It is unworthy truth for Taiwan Economy to be no longer wonderingly splendid manifestation. Therefore, this study longs for by way of observing materials and data in poll centers behind the President Election in 1996, 2000 as well as the Legislative Election in 1998, 2001. Consequently, it searches out whether economic voting manifestation for Taiwan constituency; it awaits to comprehend if the Economy is one of main variable while voting by constituency in Taiwan? Moreover, it attempts to observing constituency to be part of which social background characteristics. On the basis of the above-mentioned analysis, this study comes at something: I. Economic evaluation is indeed an influential factor; due to unique historical culture background, the crucial point in voting still inferiors to identification of political party and unity-independence position. Nevertheless, candidates among latterly national elections propose unexceptionable policy to lure constituency; newspapers and mass media describe prosperity fluctuation by a wide margin. The effect of economic issues is more and more significant in future election. It may observe continually. II. The study detects low-education-level constituency easily possess economic voting behavior than high-education-level constituency, but it is not fit in with foreign relevant economic voting theory - it is worthy of probing into variations between Taiwan and foreign countries. Over and above, owning-occupation constituency easily possesses economic voting behavior than non-owning-occupation constituency. It hopes adding the gender and age factors in future research. Key Words: Economic Evaluation, Voting Behavior, the Legislative Election, the President Election, Multinomial Logit Model