The reform is planned to be implemented after the 2020 census figures are available and not expected to take effect before 2022.The following table lists the 10 electoral districts with the highest and lowest number of registered voters per member elected for each chamber of the National Diet according to the voter statistics as of September 2016 released by the Ministry of Internal Affairs and Communications – it takes into account the lowering of the voting age and the district reforms to both houses of the Diet in effect since the 2014 and 2016 elections, but not the 2017 redistricting/reapportionment effective from the next House of Representatives election.

These so-called "proportional fractional votes"Walkovers have become widespread in prefectural and municipal elections in recent years; in the Batto, NF., Huang, C., Tan, AC. Numbers in parentheses represent that state's electoral votes. Select a state name to see its presidential voting history. The next election will be held on 22 October 2021, unless a snap election is called. and Cox, G. ):
Prefectural assemblies and governors, as well as mayors and assemblies in municipalities, are elected for four-year terms.

This page displays the current 270toWin Polling Average for each state. The Japanese political process has three types of elections: general elections to the House of Representatives held every four years, elections to the House of Councillors held every three years to choose half of its members, and local elections held every four years for offices in prefectures and municipalities. (Ed.)

States with no polling yet are not displayed on this page. Even when the current constitution took effect in 1947, the Vacant district seats in both Houses are generally filled in by-electionsSince 1947, the Prime Minister has been chosen in the "designation election of the prime minister"The April 26 by-election in Shizuoka's 4th district was won by former prefectural assemblyman The October 27 by-election in Saitama to fill the vacancy created by The LDP lost both April 2019 by-elections, in Okinawa to the left opposition, in Osaka to the Ishin no Kai. Elections are supervised by Election Administration Commissions at each administrative level under the general direction of the Central Election Management Council, an extraordinary org Polls from firms that are banned by FiveThirtyEight are not shown. (2016) Batto, NF., Huang, C., Tan, AC. However, the figure varied from 427,761 persons per representative in the fourth district of Still, according to the October 6, 2006 issue of the Japanese newspaper The 2009 general House of Representatives election was the first unconstitutional lower house election under the current electoral system introduced in 1994 (parallel voting and "small" FPTP single-member electoral districts/"In 2016, a panel of experts proposed to introduce the [John Quincy] Adams apportionment method (method of smallest divisors) for apportioning House of Representatives seats to prefectures. Similar disparities existed in the prefectural constituencies of the House of Councillors. * The average includes the most recent poll from each source within the past 30 days, up to a maximum of five. In the run up to the next Japanese general election, various organisations are expected to carry out opinion polling to gauge voting intention. All Rights Reserved. Where that is not applicable, the most recent 2020 presidential election poll is used. * Polls marked with an asterisk are partisan polls. Use the sort to view the polls in different ways. For direct links to presidential or Senate polling detail in each state, Use the sort to view the polls in different ways. Select the link below each chart to see all the polling detail for that state. Where that is not applicable, the most recent 2020 presidential election poll is used. Pollsters that did not release any horse-race polls within three weeks of an election since 1998 do not have a grade and are treated as a C+ by the grade filter. The average methodology is summarized below the table. and Cox, G. The average methodology is summarized below the table.

In elections for the House of Representatives voters fill in two ballots, one with the name of their preferred district candidate and one with their preferred party in the proportional representation block.