The major attempt of the author in this study was trying to construct an empirical theory concerning the partisan choices of voters through an observation to their attitudes and backgrounds of a sample of 754 voters of Taipei in the 1980 legislatorial election. According to their conceptual framework, the authors divided the voters’ attitudes into orientations of issue, candidate, and social and personal relations. And the voters’ backgrounds were divided into the individual and the social, including sex, age, birthplace, education, and profession. The main findings of the authors can be briefly stated as follows: 1. In view of orientations of issue, the voters for the Nationalist candidates and those for the independent candidates were significantly different in such issues of national identity, basic human rights, political participation, and separation of powers. There were no differences in policy issues, such as housing, medical care, social insurance and public employee’s salary. These findings indicated that the political conflicts of ours were, in nature, of the system rather than within the system as usually seen in the Western democratical countries. 　　2.With respect to orientations of candidate, and social and personal relations, the voters for the Nationalist candidates put more emphasis on personal virtues and those for the independent candidates payed more sympathy to personal suffers, more praise to brave criticsms, and more attention to ideas of family members. 　　3.As for the voters’ backgrounds, the independent candidates won more support from Taiwanese than mainlanders, but the nationalist candidates got rather even. In addition, the voters for the Nationalist candidates were comparatively high educated, belong to the middle class, but older.