First why did the reform of the electoral system conducted by the LDP (Liberal Democratic Party) twice before the 1990’s, fail while this one within one year after the LDP cabinet had resigned?

First why did the reform of the electoral system conducted by the LDP (Liberal Democratic Party) twice before the 1990’s, fail while this one within one year after the LDP cabinet had resigned?

第一个是，九○年代以前，自民党曾两度尝试将中选举区制改为举区制，但是均失败。