利益団体内の動態と政権交代

―農業票の融解―

抄録

  In the 2009 Lower House election, the Liberal Democratic Party (LDP) fell to the opposition party and the Democratic Party of Japan (DPJ) became the ruling party. In Japan, the LDP and many interest groups built the strong collaborative relationship for a long time. By the change of government, however, many interest groups which had built the good relation with the LDP was forced to the review of political connection. The transition 2009 was the turning point to review of the relations of the political party and the interest group.
  In this paper, I pay attention to the change of the political attitude of the Japanese farmer and analyze their voting behavior in the 2010 Upper house election. And I clarify new cleavages in the agricultural organization of the monolith and expect the new relations of the political party and the interest group in the future.
  After 2009, the farmer's political opinion is changing. The farming families who support the Liberal Democratic Party decreased, and most of farmers hope that the JA Central will keep neutral for politics and continue pressuring the government. In other words farmhouses comparing the opinion of two major political parties increase.
  Until 2009 the House of Representatives election, the farming family voting for the DPJ tended to increase, and the agricultural organized votes tends to be divided. In 2010 House of Councilors election, the tendency was promoted. Some farmers voted for the conservative small party such as the Yours Party (Minna no To) or the Sunrise Party of Japan (Tachiagare Nippon). These results suggest that cracks in the agriculture group are surfacing.
  By change of government, the Japanese interest group politics greets a turning point. However, there are not any studies about the change in the interest group. It is necessary to analyze how the relations of the political party and the interest group are rebuilt.