Candidates
岡島 一正 — Chiba 3rd District 2021
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Lost in Chiba 3rd District (2021) — 65,627 votes (38.1%), rank #2 of 2.
- chevron_rightProfile: Male, age 63. Background: その他. Status entering: Incumbent.
- chevron_rightCareer wins to date: 3
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
65,627
Vote Share
38.1%
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その他
Detail立憲民主党災害・緊急事態局長、元ＮＨＫカメラマン
Incumbency & Career Wins
- Status entering the 2021 election: Incumbent
- Total recorded wins to date: 3
- Age at time of election: 63
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 松野 博一 | LDP | 106,500 | 61.9% |
| #2 | 岡島 一正 this page | CDP | 65,627 | 38.1% |
Same-Party Peers in 2021
- 武正 公一 — Saitama 1st District, 38.1% (Lost)
- 神山 洋介 — Kanagawa 17th District, 37.9% (Lost)
- 青木 剛志 — Fukuoka 7th District, 37.7% (Lost)
- 升田 世喜男 — Aomori 1st District, 37.4% (Lost)
- 岡本 英子 — Kanagawa 2nd District, 38.9% (Lost)
Candidates with Similar Vote Share
- 高橋 舞子 (LDP, Oita 1st District) — 38.1%
- 武正 公一 (CDP, Saitama 1st District) — 38.1%
- 初村 滝一郎 (LDP, Nagasaki 1st District) — 38.0%
- 加藤 健一 (DPP, Yamagata 2nd District) — 38.2%
- 高橋 祐介 (LDP, Hokkaido 2nd District) — 37.9%
Career Timeline
Elections
4
Career Wins
1
Total Votes
178,486
Best Vote Share
39.2%
| Year | District | Party | System | Votes | Share | Rank | Result |
|---|---|---|---|---|---|---|---|
| 2026 | Chiba 3rd District | Centrist | Single-member | 48,689 | 29.2% | #2 | Lost |
| 2024 | Southern Kanto Block (PR Block) | CDP | PR Block | 1 | 0.0% | #11 | Won |
| 2024 | Chiba 3rd District | CDP | Single-member | 64,169 | 39.2% | #2 | Lost |
| 2021 | Chiba 3rd District | CDP | Single-member | 65,627 | 38.1% | #2 | Lost |
Chiba 3rd District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 松野 博一 | LDP | 86,687 | 52.0% | 4 | 37,998 |
| 2024 | 松野 博一 | LDP | 67,308 | 41.2% | 4 | 3,139 |
| 2021 | 松野 博一 | LDP | 106,500 | 61.9% | 2 | 40,873 |
Chiba Snapshot (2021)
Districts
13
Candidates
39
Seats Filled
13
Active Parties
9
Party representation across Chiba
LDP13 cand · 9 won
CDP11 cand · 4 won
JCP4 cand · 0 won
Ishin4 cand · 0 won
Independent3 cand · 0 won
DPP1 cand · 0 won
NHK Party1 cand · 0 won
Minor Parties1 cand · 0 won
Reiwa1 cand · 0 won
Top performers across Chiba (2021)
| Candidate | District | Party | Votes | Share | Result |
|---|---|---|---|---|---|
| 野田 佳彦 | Chiba 4th District | CDP | 154,412 | 64.5% | Won |
| 小林 鷹之 | Chiba 2nd District | LDP | 153,017 | 62.0% | Won |
| 本庄 知史 | Chiba 8th District | CDP | 135,125 | 59.7% | Won |
| 田嶋 要 | Chiba 1st District | CDP | 128,556 | 56.3% | Won |
| 齋藤 健 | Chiba 7th District | LDP | 127,548 | 55.0% | Won |
| 浜田 靖一 | Chiba 12th District | LDP | 123,210 | 64.0% | Won |
| 薗浦 健太郎 | Chiba 5th District | LDP | 111,985 | 47.0% | Won |
Where 岡島 一正 ranks
Among CDP single-member candidates in 2021
Higher vote share than 42.5% (91 of 214)
Among ALL single-member candidates in 2021
Higher vote share than 53% (454 of 857)
その他 cohort (2021)
Cohort Size
86
Cohort Wins
33
Cohort Avg Share
23.5%
Cohort Avg Age
51
岡島 一正's 38.1% vote share is 14.63 percentage points above the その他 cohort average for 2021.
Frequently Asked Questions
How many times has 岡島 一正 run for the House of Representatives?expand_more
岡島 一正 has appeared in 4 recorded elections, winning 1 of them. The most recent was 2021.
Who has won Chiba 3rd District in recent elections?expand_more
Recorded winners of Chiba 3rd District: 松野 博一 (2026); 松野 博一 (2024); 松野 博一 (2021).
How many Chiba districts ran candidates in 2021?expand_more
Chiba had 13 districts with 39 total candidates in 2021, of whom 13 won seats.
Did 岡島 一正 win the 2021 election?expand_more
岡島 一正 did not win the 2021 House of Representatives race in Chiba 3rd District, recording 65,627 votes (38.1%).
Which party did 岡島 一正 represent?expand_more
岡島 一正 ran as a CDP candidate. The party fielded 253 candidates in 2021.
Who won Chiba 3rd District in 2021?expand_more
松野 博一 (LDP) won Chiba 3rd District with 106,500 votes, a vote share of 61.9%.