Candidates
大西 健太郎 — Tokyo 20th District 2024
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Lost in Tokyo 20th District (2024) — 65,435 votes (30.1%), rank #2 of 3.
- chevron_rightProfile: Male, age 45. Background: その他. Status entering: Newcomer.
fact_check Quick Facts
Age
45 yrs
Gender
male ♂ Male
Election Date
Th10 27, 2024
System
Single-member
Seats Recorded
—
Election Performance
Vote Count & Share
Votes
65,435
Vote Share
30.1%
Rank
#2
Outcome
Lost
Win/Loss Outcome
Outcome
Did not win seat in 2024
Political Context
Party Affiliation
DPP
国民
Party Candidates 2024
58
Party Seats Won
28
Prefectures
34
Avg Share
30.9%
Occupation & Background
Categoryその他
Detail元高校教諭、元空手世界チャンピオン
Incumbency & Career Wins
- Status entering the 2024 election: Newcomer
- Age at time of election: 45
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 木原 誠二 | LDP | 93,390 | 43.0% |
| #2 | 大西 健太郎 this page | DPP | 65,435 | 30.1% |
| #3 | 宮本 徹 | JCP | 58,215 | 26.8% |
Same-Party Peers in 2024
- 菊池 大二郎 — Yamagata 2nd District, 30.3% (Lost)
- 仙田 晃宏 — Gifu 3rd District, 30.4% (Lost)
- 森 洋介 — Tokyo 13th District, 30.8% (Lost)
- 円 より子 — Tokyo 17th District, 28.0% (Lost)
- 福田 徹 — Aichi 16th District, 32.7% (Won)
Candidates with Similar Vote Share
- 日吉 雄太 (CDP, Shizuoka 7th District) — 30.1%
- 田中 英之 (LDP, Kyoto 4th District) — 30.1%
- 森山 浩行 (CDP, Osaka 16th District) — 30.0%
- 稲葉 大輔 (LDP, Shizuoka 8th District) — 30.2%
- 大塚 聡子 (CDP, Shimane 2nd District) — 30.0%
Career Timeline
Elections
2
Career Wins
0
Total Votes
112,345
Best Vote Share
30.1%
| Year | District | Party | System | Votes | Share | Rank | Result |
|---|---|---|---|---|---|---|---|
| 2026 | Tokyo 20th District | DPP | Single-member | 46,910 | 20.9% | #2 | Lost |
| 2024 | Tokyo 20th District | DPP | Single-member | 65,435 | 30.1% | #2 | Lost |
Tokyo 20th District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 木原 誠二 | LDP | 108,985 | 48.6% | 4 | 62,075 |
| 2024 | 木原 誠二 | LDP | 93,390 | 43.0% | 3 | 27,955 |
| 2021 | 木原 誠二 | LDP | 121,621 | 52.6% | 3 | 55,105 |
Tokyo Snapshot (2024)
Districts
30
Candidates
144
Seats Filled
30
Active Parties
11
Party representation across Tokyo
LDP24 cand · 11 won
Ishin22 cand · 0 won
CDP21 cand · 15 won
JCP20 cand · 0 won
Independent19 cand · 3 won
Sanseito19 cand · 0 won
DPP11 cand · 0 won
みんな4 cand · 0 won
Reiwa2 cand · 0 won
Komeito1 cand · 1 won
Minor Parties1 cand · 0 won
Top performers across Tokyo (2024)
| Candidate | District | Party | Votes | Share | Result |
|---|---|---|---|---|---|
| 吉田 晴美 | Tokyo 8th District | CDP | 116,426 | 51.1% | Won |
| 長妻 昭 | Tokyo 27th District | CDP | 112,388 | 54.6% | Won |
| 伊藤 俊輔 | Tokyo 23rd District | CDP | 111,851 | 59.0% | Won |
| 井上 信治 | Tokyo 25th District | LDP | 110,488 | 53.1% | Won |
| 松原 仁 | Tokyo 26th District | Independent | 108,174 | 45.6% | Won |
| 落合 貴之 | Tokyo 6th District | CDP | 107,222 | 47.4% | Won |
| 山花 郁夫 | Tokyo 22nd District | CDP | 99,790 | 40.2% | Won |
Where 大西 健太郎 ranks
Among DPP single-member candidates in 2024
Higher vote share than 56.1% (23 of 41)
Among ALL single-member candidates in 2024
Higher vote share than 57.1% (636 of 1113)
その他 cohort (2024)
Cohort Size
85
Cohort Wins
15
Cohort Avg Share
17.0%
Cohort Avg Age
53
大西 健太郎's 30.1% vote share is 13.11 percentage points above the その他 cohort average for 2024.
Frequently Asked Questions
How many times has 大西 健太郎 run for the House of Representatives?expand_more
大西 健太郎 has appeared in 2 recorded elections, winning 0 of them. The most recent was 2024.
Who has won Tokyo 20th District in recent elections?expand_more
Recorded winners of Tokyo 20th District: 木原 誠二 (2026); 木原 誠二 (2024); 木原 誠二 (2021).
How many Tokyo districts ran candidates in 2024?expand_more
Tokyo had 30 districts with 144 total candidates in 2024, of whom 30 won seats.
Did 大西 健太郎 win the 2024 election?expand_more
大西 健太郎 did not win the 2024 House of Representatives race in Tokyo 20th District, recording 65,435 votes (30.1%).
Which party did 大西 健太郎 represent?expand_more
大西 健太郎 ran as a DPP candidate. The party fielded 58 candidates in 2024.
Who won Tokyo 20th District in 2024?expand_more
木原 誠二 (LDP) won Tokyo 20th District with 93,390 votes, a vote share of 43.0%.