Candidates
宮岡 進一郎 — Chiba 8th District 2021
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Lost in Chiba 8th District (2021) — 9,845 votes (4.3%), rank #3 of 3.
- chevron_rightProfile: Male, age 80. Background: 会社員. Status entering: Newcomer.
fact_check Quick Facts
Age
80 yrs
Gender
male ♂ Male
Election Date
Th10 31, 2021
System
Single-member
Seats Recorded
—
Election Performance
Vote Count & Share
Votes
9,845
Vote Share
4.3%
Rank
#3
Outcome
Lost
Win/Loss Outcome
Outcome
Did not win seat in 2021
Political Context
Party Affiliation
Independent
無
Party Candidates 2021
78
Party Seats Won
10
Prefectures
32
Avg Share
14.0%
Occupation & Background
Category会社員
Detail元高校教諭、元精密機器製造会社社員
Incumbency & Career Wins
- Status entering the 2021 election: Newcomer
- Age at time of election: 80
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 本庄 知史 | CDP | 135,125 | 59.7% |
| #2 | 桜田 義孝 | LDP | 81,556 | 36.0% |
| #3 | 宮岡 進一郎 this page | Independent | 9,845 | 4.3% |
Same-Party Peers in 2021
- 佐藤 真実 — Saitama 1st District, 4.5% (Lost)
- 高橋 進吾 — Hyogo 1st District, 4.7% (Lost)
- 根来 英樹 — Wakayama 3rd District, 3.9% (Lost)
- 大西 恒樹 — Kanagawa 4th District, 3.8% (Lost)
- 浅田 晃司 — Miyagi 3rd District, 3.6% (Lost)
Candidates with Similar Vote Share
- 齊藤 忠行 (NHK Party, Hokkaido 6th District) — 4.2%
- 青木 弘 (JCP, Tochigi 1st District) — 4.2%
- 大久保 令子 (JCP, Yamanashi 2nd District) — 4.4%
- 野澤 康幸 (JCP, Aichi 14th District) — 4.2%
- 中川 民英 (JCP, Mie 4th District) — 4.4%
Chiba 8th District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 松本 泉 | LDP | 95,279 | 49.1% | 4 | 32,495 |
| 2024 | 本庄 知史 | CDP | 78,678 | 42.9% | 5 | 19,608 |
| 2021 | 本庄 知史 | CDP | 135,125 | 59.7% | 3 | 53,569 |
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 宮岡 進一郎 ranks
Among Independent single-member candidates in 2021
Higher vote share than 46.2% (36 of 78)
Among ALL single-member candidates in 2021
Higher vote share than 8.1% (69 of 857)
会社員 cohort (2021)
Cohort Size
36
Cohort Wins
2
Cohort Avg Share
11.7%
Cohort Avg Age
49
宮岡 進一郎's 4.3% vote share is 7.44 percentage points below the 会社員 cohort average for 2021.
Frequently Asked Questions
Who has won Chiba 8th District in recent elections?expand_more
Recorded winners of Chiba 8th District: 松本 泉 (2026); 本庄 知史 (2024); 本庄 知史 (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 宮岡 進一郎 win the 2021 election?expand_more
宮岡 進一郎 did not win the 2021 House of Representatives race in Chiba 8th District, recording 9,845 votes (4.3%).
Which party did 宮岡 進一郎 represent?expand_more
宮岡 進一郎 ran as a Independent candidate. The party fielded 78 candidates in 2021.
Who won Chiba 8th District in 2021?expand_more
本庄 知史 (CDP) won Chiba 8th District with 135,125 votes, a vote share of 59.7%.