Candidates
島田 幸成 — Tokyo 25th District 2021
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Lost in Tokyo 25th District (2021) — 89,991 votes (40.6%), rank #2 of 2.
- chevron_rightProfile: Male, age 53. Background: 議員. Status entering: Newcomer.
fact_check Quick Facts
Age
53 yrs
Gender
male ♂ Male
Election Date
Th10 31, 2021
System
Single-member
Seats Recorded
—
Election Performance
Vote Count & Share
Votes
89,991
Vote Share
40.6%
Rank
#2
Outcome
Lost
Win/Loss Outcome
Outcome
Did not win seat in 2021
Political Context
Party Affiliation
CDP
立民
Party Candidates 2021
253
Party Seats Won
96
Prefectures
58
Avg Share
39.0%
Occupation & Background
Category議員
Detail学校法人理事長、元東京都議会議員
Incumbency & Career Wins
- Status entering the 2021 election: Newcomer
- Age at time of election: 53
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 井上 信治 | LDP | 131,430 | 59.4% |
| #2 | 島田 幸成 this page | CDP | 89,991 | 40.6% |
Same-Party Peers in 2021
- 関 健一郎 — Aichi 15th District, 40.6% (Lost)
- 今井 瑠々 — Gifu 5th District, 40.5% (Lost)
- 牧 義夫 — Aichi 4th District, 40.8% (Lost)
- 池田 真紀 — Hokkaido 5th District, 40.3% (Lost)
- 西川 将人 — Hokkaido 6th District, 40.3% (Lost)
Candidates with Similar Vote Share
- 宗清 皇一 (LDP, Osaka 13th District) — 40.6%
- 関 健一郎 (CDP, Aichi 15th District) — 40.6%
- 谷川 弥一 (LDP, Nagasaki 3rd District) — 40.7%
- 星野 剛士 (LDP, Kanagawa 12th District) — 40.7%
- 今井 瑠々 (CDP, Gifu 5th District) — 40.5%
Tokyo 25th District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 井上 信治 | LDP | 109,606 | 50.5% | 5 | 59,387 |
| 2024 | 井上 信治 | LDP | 110,488 | 53.1% | 4 | 69,408 |
| 2021 | 井上 信治 | LDP | 131,430 | 59.4% | 2 | 41,439 |
Tokyo Snapshot (2021)
Districts
25
Candidates
96
Seats Filled
25
Active Parties
13
Party representation across Tokyo
LDP24 cand · 16 won
CDP20 cand · 8 won
Ishin17 cand · 0 won
Independent14 cand · 0 won
JCP9 cand · 0 won
NHK Party3 cand · 0 won
DPP2 cand · 0 won
Reiwa2 cand · 0 won
Komeito1 cand · 1 won
第一1 cand · 0 won
SDP1 cand · 0 won
やまと1 cand · 0 won
Minor Parties1 cand · 0 won
Top performers across Tokyo (2021)
| Candidate | District | Party | Votes | Share | Result |
|---|---|---|---|---|---|
| 萩生田 光一 | Tokyo 24th District | LDP | 149,152 | 58.5% | Won |
| 吉田 晴美 | Tokyo 8th District | CDP | 137,341 | 48.4% | Won |
| 小倉 將信 | Tokyo 23rd District | LDP | 133,206 | 51.2% | Won |
| 井上 信治 | Tokyo 25th District | LDP | 131,430 | 59.4% | Won |
| 伊藤 達也 | Tokyo 22nd District | LDP | 131,351 | 46.9% | Won |
| 平 将明 | Tokyo 4th District | LDP | 128,708 | 51.5% | Won |
| 伊藤 俊輔 | Tokyo 23rd District | CDP | 126,732 | 48.8% | Lost |
Where 島田 幸成 ranks
Among CDP single-member candidates in 2021
Higher vote share than 49.5% (106 of 214)
Among ALL single-member candidates in 2021
Higher vote share than 56.2% (482 of 857)
議員 cohort (2021)
Cohort Size
142
Cohort Wins
64
Cohort Avg Share
30.4%
Cohort Avg Age
53
島田 幸成's 40.6% vote share is 10.19 percentage points above the 議員 cohort average for 2021.
Frequently Asked Questions
Who has won Tokyo 25th District in recent elections?expand_more
Recorded winners of Tokyo 25th District: 井上 信治 (2026); 井上 信治 (2024); 井上 信治 (2021).
How many Tokyo districts ran candidates in 2021?expand_more
Tokyo had 25 districts with 96 total candidates in 2021, of whom 25 won seats.
Did 島田 幸成 win the 2021 election?expand_more
島田 幸成 did not win the 2021 House of Representatives race in Tokyo 25th District, recording 89,991 votes (40.6%).
Which party did 島田 幸成 represent?expand_more
島田 幸成 ran as a CDP candidate. The party fielded 253 candidates in 2021.
Who won Tokyo 25th District in 2021?expand_more
井上 信治 (LDP) won Tokyo 25th District with 131,430 votes, a vote share of 59.4%.