Abstract
In the fifth case of the local election using an electronic voting system which was held in Japan in July 2003, dire trouble was happened such as interruption for faulty at the electronic voting machines. Therefore some voters proposed the administrative review and launched legal action. In March 2005, the Nagoya High Court ruled that the Kani City's 2003 Assembly Election was null and void because of the trouble, and this judgment was upheld by the Supreme Court of Japan. This paper attempts to examine what trouble happened in this election, to survey what was discussed and judged in these administrative and judicial reviews about it, and to give a commentary on the each judgment, through exploring legal channels when the election procedure using the electronic voting system had trouble.
