The Supreme Court ruled Wednesday that the Upper House election in the summer of 2013 bordered on being unconstitutional due to an ¡°outrageous¡± disparity in the weight of votes between districts, but it rejected the plaintiff¡¯s demand to invalidate the result.

The ruling indicates again the judiciary¡¯s growing impatience with lawmakers¡¯ continued reluctance to rectify the inequality in vote values in national elections between heavily populated districts and their more sparsely populated counterparts.

The top court¡¯s decision is likely to provide reform-minded forces with further momentum to press for a full-fledged revamp of the electoral system, even as the nation prepares for the snap Lower House election slated for Dec. 14.