Political party leadership elections in Japan
The 2024 Constitutional Democratic Party of Japan presidential election took place on 23 September 2024, electing the next president of the Constitutional Democratic Party of Japan for a 3-year term at the expiration of the current party leader Kenta Izumi's term. The winner of this election, Yoshihiko Noda led the party in the 2024 Japanese general election, and will led them in the 2025 Japanese House of Councillors election.
Former Prime Minister and President of the Democratic Party of Japan Yoshihiko Noda won the election in a second round runoff, defeating opponent Yukio Edano, former party president and the party's founder.
Election procedure.
The "Rules for Election of Constitutional Democratic Party Presidents" establish the election process for the CDP president. To qualify as a candidate officially, a candidate must be a CDP member of the National Diet and receive a nomination from at least 20 fellow CDP Diet members.
The CDP selects its leader via a two-round election involving CDP members of the Diet, local lawmakers in all 47 prefectures, and dues-paying party members from across Japan. A total of 740 points will be distributed amongst the electorate. 370 points are allocated to national lawmakers and prospective candidates; 272 of those points are assigned to the party's 136 Diet members, including the vice speaker of both houses of the Diet, at 2 points each, while 98 points are allocated to prospective candidates in national elections, at 1 point each. Meanwhile, groups of 1,236 local assembly members across the country and 114,792 rank-and-file party members and supporters are allocated 185 points each. If any candidate wins a majority (over 50%) of votes in the first round, that candidate is elected party president.
If no candidate receives a majority of votes in the first round, a runoff is held immediately between the top two candidates. The candidate who wins the most votes in the runoff is then elected president.
Background.
Following the resignation of the then-party president Yukio Edano after the party's poor performance in the 2021 Japanese general election, former 2020 leadership contender and Parliamentary Secretary of the Cabinet Office Kenta Izumi was elected in 2021, defeating former Mayor of Niseko and fellow Diet member Seiji Osaka in a second round runoff. 
The main issues expected to be discussed during the presidential election are the nature of the opposition parties' joint struggle to rebuild the party and the pros and cons of the “realistic course” of Izumi's fundamental policies, such as security and energy.
Campaign.
The race formally begun on September 7, with four candidate able to qualify with 20 sponsors: former Prime Minister Yoshihiko Noda, former party president Yukio Edano, incumbent party president Kenta Izumi and first-term diet member Harumi Yoshida.
Candidates.
Supporters.
Party regulations require at least 20 Diet members’ support to run.
 ;templatestyles src="Endorsements box/styles.css"/ ;Yukio Edano
 ;templatestyles src="Endorsements box/styles.css"/ ;Kenta Izumi
 ;templatestyles src="Endorsements box/styles.css"/ ;Yoshihiko Noda
 ;templatestyles src="Endorsements box/styles.css"/ ;Harumi Yoshida
Pre-election endorsements.
 ;templatestyles src="Endorsements box/styles.css"/ ;Endorsements of Chinami Nishimura
 ;templatestyles src="Endorsements box/styles.css"/ ;Endorsements of Yoshihiko Noda
Opinion polls.
"(Figures in parentheses are approval ratings of Constitutional Democratic Party supporters)"
References.
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