Candidates
山岡 達丸 — Hokkaido 9th District 2021
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Won in Hokkaido 9th District (2021) — 113,512 votes (51.5%), rank #1 of 2.
- chevron_rightProfile: Male, age 42. Background: 記者. Status entering: Incumbent.
- chevron_rightCareer wins to date: 3
fact_check Quick Facts
Age
42 yrs
Gender
male ♂ Male
Election Date
Th10 31, 2021
System
Single-member
Seats Recorded
1
Election Performance
Vote Count & Share
Votes
113,512
Vote Share
51.5%
Rank
#1
Outcome
Won
Win/Loss Outcome
Seat
Elected to the House of Representatives
Political Context
Party Affiliation
CDP
立民
Party Candidates 2021
253
Party Seats Won
96
Prefectures
58
Avg Share
39.0%
Occupation & Background
Category記者
Detail元ＮＨＫ記者、立憲民主党北海道連副代表
Incumbency & Career Wins
- Status entering the 2021 election: Incumbent
- Total recorded wins to date: 3
- Age at time of election: 42
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 山岡 達丸 this page | CDP | 113,512 | 51.5% |
| #2 | 堀井 学 | LDP | 106,842 | 48.5% |
Same-Party Peers in 2021
- 枝野 幸男 — Saitama 5th District, 51.4% (Won)
- 佐藤 公治 — Hiroshima 6th District, 51.4% (Won)
- 石川 香織 — Hokkaido 11th District, 51.8% (Won)
- 階 猛 — Iwate 1st District, 51.2% (Won)
- 金子 恵美 — Fukushima 1st District, 51.1% (Won)
Candidates with Similar Vote Share
- 井出 庸生 (LDP, Nagano 3rd District) — 51.5%
- 平 将明 (LDP, Tokyo 4th District) — 51.5%
- 枝野 幸男 (CDP, Saitama 5th District) — 51.4%
- 柴山 昌彦 (LDP, Saitama 8th District) — 51.6%
- 山口 晋 (LDP, Saitama 10th District) — 51.6%
Career Timeline
Elections
4
Career Wins
3
Total Votes
300,582
Best Vote Share
56.1%
| Year | District | Party | System | Votes | Share | Rank | Result |
|---|---|---|---|---|---|---|---|
| 2026 | Hokkaido Block (PR Block) | Centrist | PR Block | 0 | 0.0% | #7 | Won |
| 2026 | Hokkaido 9th District | Centrist | Single-member | 81,063 | 39.7% | #2 | Lost |
| 2024 | Hokkaido 9th District | CDP | Single-member | 106,007 | 56.1% | #1 | Won |
| 2021 | Hokkaido 9th District | CDP | Single-member | 113,512 | 51.5% | #1 | Won |
Hokkaido 9th District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 松下 英樹 | LDP | 87,984 | 43.1% | 4 | 6,921 |
| 2024 | 山岡 達丸 | CDP | 106,007 | 56.1% | 3 | 43,679 |
| 2021 | 山岡 達丸 | CDP | 113,512 | 51.5% | 2 | 6,670 |
Hokkaido Snapshot (2021)
Districts
12
Candidates
32
Seats Filled
12
Active Parties
7
Party representation across Hokkaido
CDP12 cand · 5 won
LDP11 cand · 6 won
Ishin3 cand · 0 won
JCP3 cand · 0 won
Independent1 cand · 0 won
NHK Party1 cand · 0 won
Komeito1 cand · 1 won
Top performers across Hokkaido (2021)
| Candidate | District | Party | Votes | Share | Result |
|---|---|---|---|---|---|
| 和田 義明 | Hokkaido 5th District | LDP | 139,950 | 50.6% | Won |
| 東 国幹 | Hokkaido 6th District | LDP | 128,670 | 55.5% | Won |
| 道下 大樹 | Hokkaido 1st District | CDP | 118,286 | 45.3% | Won |
| 高木 宏壽 | Hokkaido 3rd District | LDP | 116,917 | 44.7% | Won |
| 逢坂 誠二 | Hokkaido 8th District | CDP | 112,857 | 52.7% | Won |
| 荒井 優 | Hokkaido 3rd District | CDP | 112,535 | 43.0% | Lost |
| 池田 真紀 | Hokkaido 5th District | CDP | 111,366 | 40.3% | Lost |
Where 山岡 達丸 ranks
Among CDP single-member candidates in 2021
Higher vote share than 89.3% (191 of 214)
Among ALL single-member candidates in 2021
Higher vote share than 80.2% (687 of 857)
記者 cohort (2021)
Cohort Size
16
Cohort Wins
5
Cohort Avg Share
33.1%
Cohort Avg Age
48
山岡 達丸's 51.5% vote share is 18.45 percentage points above the 記者 cohort average for 2021.
Frequently Asked Questions
How many times has 山岡 達丸 run for the House of Representatives?expand_more
山岡 達丸 has appeared in 4 recorded elections, winning 3 of them. The most recent was 2021.
Who has won Hokkaido 9th District in recent elections?expand_more
Recorded winners of Hokkaido 9th District: 松下 英樹 (2026); 山岡 達丸 (2024); 山岡 達丸 (2021).
How many Hokkaido districts ran candidates in 2021?expand_more
Hokkaido had 12 districts with 32 total candidates in 2021, of whom 12 won seats.
Did 山岡 達丸 win the 2021 election?expand_more
山岡 達丸 won the 2021 House of Representatives race in Hokkaido 9th District, recording 113,512 votes (51.5%).
Which party did 山岡 達丸 represent?expand_more
山岡 達丸 ran as a CDP candidate. The party fielded 253 candidates in 2021.
Who won Hokkaido 9th District in 2021?expand_more
山岡 達丸 (CDP) won Hokkaido 9th District with 113,512 votes, a vote share of 51.5%.