Candidates
島田 誠 — Saitama 11th District 2021
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Lost in Saitama 11th District (2021) — 49,094 votes (27.2%), rank #2 of 3.
- chevron_rightProfile: Male, age 63. Background: 首長. Status entering: Newcomer.
fact_check Quick Facts
Age
63 yrs
Gender
male ♂ Male
Election Date
Th10 31, 2021
System
Single-member
Seats Recorded
—
Election Performance
Vote Count & Share
Votes
49,094
Vote Share
27.2%
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首長
Detail元埼玉県寄居町長、元埼玉県熊谷市職員
Incumbency & Career Wins
- Status entering the 2021 election: Newcomer
- Age at time of election: 63
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 小泉 龍司 | LDP | 111,810 | 61.9% |
| #2 | 島田 誠 this page | CDP | 49,094 | 27.2% |
| #3 | 小山 森也 | JCP | 19,619 | 10.9% |
Same-Party Peers in 2021
- 市来 伴子 — Yamanashi 2nd District, 27.7% (Lost)
- 遠藤 行洋 — Shizuoka 1st District, 27.7% (Lost)
- 梶原 康弘 — Hyogo 5th District, 28.0% (Lost)
- 黒田 雄 — Chiba 2nd District, 28.2% (Lost)
- 藤井 幹雄 — Wakayama 2nd District, 25.9% (Lost)
Candidates with Similar Vote Share
- 高麗 啓一郎 (LDP, Osaka 8th District) — 27.3%
- 杉本 和巳 (Ishin, Aichi 10th District) — 27.0%
- 金村 龍那 (Ishin, Kanagawa 10th District) — 27.5%
- 神谷 昇 (LDP, Osaka 18th District) — 27.5%
- 直山 仁 (Ishin, Shiga 3rd District) — 26.8%
Career Timeline
Elections
3
Career Wins
0
Total Votes
131,159
Best Vote Share
31.4%
| Year | District | Party | System | Votes | Share | Rank | Result |
|---|---|---|---|---|---|---|---|
| 2026 | Saitama 11th District | Centrist | Single-member | 32,508 | 19.5% | #2 | Lost |
| 2024 | Saitama 11th District | CDP | Single-member | 49,557 | 31.4% | #2 | Lost |
| 2021 | Saitama 11th District | CDP | Single-member | 49,094 | 27.2% | #2 | Lost |
Saitama 11th District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 小泉 龍司 | LDP | 88,744 | 53.4% | 5 | 56,236 |
| 2024 | 小泉 龍司 | LDP | 91,681 | 58.1% | 3 | 42,124 |
| 2021 | 小泉 龍司 | LDP | 111,810 | 61.9% | 3 | 62,716 |
Saitama Snapshot (2021)
Districts
15
Candidates
44
Seats Filled
15
Active Parties
7
Party representation across Saitama
LDP15 cand · 12 won
CDP11 cand · 3 won
JCP6 cand · 0 won
Independent5 cand · 0 won
Ishin4 cand · 0 won
DPP2 cand · 0 won
NHK Party1 cand · 0 won
Top performers across Saitama (2021)
| Candidate | District | Party | Votes | Share | Result |
|---|---|---|---|---|---|
| 大島 敦 | Saitama 6th District | CDP | 134,281 | 56.0% | Won |
| 黄川田 仁志 | Saitama 3rd District | LDP | 125,500 | 53.6% | Won |
| 新藤 義孝 | Saitama 2nd District | LDP | 121,543 | 52.8% | Won |
| 村井 英樹 | Saitama 1st District | LDP | 120,856 | 47.6% | Won |
| 大塚 拓 | Saitama 9th District | LDP | 117,002 | 53.4% | Won |
| 枝野 幸男 | Saitama 5th District | CDP | 113,615 | 51.4% | Won |
| 小泉 龍司 | Saitama 11th District | LDP | 111,810 | 61.9% | Won |
Where 島田 誠 ranks
Among CDP single-member candidates in 2021
Higher vote share than 14.5% (31 of 214)
Among ALL single-member candidates in 2021
Higher vote share than 38.3% (328 of 857)
首長 cohort (2021)
Cohort Size
28
Cohort Wins
12
Cohort Avg Share
38.2%
Cohort Avg Age
57
島田 誠's 27.2% vote share is 11 percentage points below the 首長 cohort average for 2021.
Frequently Asked Questions
How many times has 島田 誠 run for the House of Representatives?expand_more
島田 誠 has appeared in 3 recorded elections, winning 0 of them. The most recent was 2021.
Who has won Saitama 11th District in recent elections?expand_more
Recorded winners of Saitama 11th District: 小泉 龍司 (2026); 小泉 龍司 (2024); 小泉 龍司 (2021).
How many Saitama districts ran candidates in 2021?expand_more
Saitama had 15 districts with 44 total candidates in 2021, of whom 15 won seats.
Did 島田 誠 win the 2021 election?expand_more
島田 誠 did not win the 2021 House of Representatives race in Saitama 11th District, recording 49,094 votes (27.2%).
Which party did 島田 誠 represent?expand_more
島田 誠 ran as a CDP candidate. The party fielded 253 candidates in 2021.
Who won Saitama 11th District in 2021?expand_more
小泉 龍司 (LDP) won Saitama 11th District with 111,810 votes, a vote share of 61.9%.