Abe, who also heads the LDP, is set to provisionally dissolve the lower chamber of Japan's bicameral system of parliament on Sept 28, as this is when the extraordinary Diet session will be convened, according to LDP sources close to the matterHowever, the prime minister ag平台万博has the authority to dissolve the lower chamber and call a general election at willThis scenario would see official campaigning for the national poll kick off on Oct 10, with voters thereafter casting their ballots on Oct 22A lower house election must be held by December 2018 as this is when the four-year terms of current lower house lawmakers expireIf Abe goes ahead with his plan to call a snap election, then three by-elections thaag平台万博t have been slated to take place on Oct 22 would be replaced by the general electionThe opposition camp, however, has criticized Abe's move to call a snap election, with some accusing him of merely trying to escape from the influence-peddling scandals he is currently implicated in and engineering his stay in power