Abstract
The turnout rate in the House of Councilors elections has had cyclic downs at intervals of 12 years. These phenomena have been called “Idoshi Genshou”. According to Masumi Ishikawa’s explanation, “Idoshi Genshou” has resulted from the decline of electoral mobilization, which local politicians have caused. But this explanation of “Idoshi Genshou” contradicts the property of the Japanese conservative party, which has come to look different from what it used to be.
Therefore in this paper, through analyzing electoral mobilization in Japan, I verified that electoral mobilization dose not affect voter turnout and also I investigated cause of “Idoshi Genshou”.
