Abstract
This paper examines about the 2011 Supreme Court judgment from the constitutional point of view. This judgment is the first one that the Supreme Court recognized the unconstitutionality state of the “Hitori-Betuwaku-rule” under the existing election system of the House of Representatives. This paper studies about some constitutional problems of this case, comparing it with the 2007 Supreme Court judgment. In addition, because the problem of electoral district is concerning that of “the balance of democracy and judicial review”, it takes the point into account this factor.
