好意の規定因としての対人環境とメディア

―有権者意識における政党の競合と成長―

抄録

This study aspires to ascertain effects of interpersonal exchange and TV news on the electorates' political awareness during the Koizumi administration that is the growth phase of the two-party system in Japan. Focusing attention on the effects of interpersonal exchange and NHK news channel on the approval rating of the DPJ with respect to members of the electorate who were surrounded by LDP voters, interpersonal exchange could be seen to have an effect only in the fourth election, whereas NHK news had a greater significance in the first two elections. On the other hand, the effects of the NHK news channel on opinions of the LDP and Koizumi seemed to occur most strongly in the fourth and final election considered in this study. Voters' knowledge of the DPJ, or their interest in the party, or their expectations of the party, might have been so minimal that little influential argument about the party occurred before the fourth election. In the meantime, the apparently objective NHK news reported the emerging party. Thus, the fact conversation partners knew less about the DPJ may have increased the influence of the NHK news reports on voters.