The graphic, taken from the web (https://pixta.jp/illustration/7017579), illustrates the controversy over the differing “weight” of votes in different parts of Japan. If two districts both elect one representative to the national government but one district has a larger population than the other, the votes cast by people in the larger district “weigh” less:
— start quote — The Fukuoka High Court, in its Wednesday decision, ruled that the elections in the constituencies of Fukuoka, Saga, Nagasaki, Oita and Kumamoto prefectures were “unconstitutional” but did not go as far as to invalidate the results. — end quote —
http://www.japantimes.co.jp/opinion/2015/03/29/editorials/letting-popular-will-prevail/