Candidates
水戸 将史 — Kanagawa 12th District 2021
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Lost in Kanagawa 12th District (2021) — 37,753 votes (16.9%), rank #3 of 3.
- chevron_rightProfile: Male, age 59. Background: 議員. Status entering: Former.
fact_check Quick Facts
Age
59 yrs
Gender
male ♂ Male
Election Date
Th10 31, 2021
System
Single-member
Seats Recorded
—
Election Performance
Vote Count & Share
Votes
37,753
Vote Share
16.9%
Rank
#3
Outcome
Lost
Win/Loss Outcome
Outcome
Did not win seat in 2021
Political Context
Party Affiliation
Ishin
維新
Party Candidates 2021
119
Party Seats Won
41
Prefectures
38
Avg Share
23.7%
Occupation & Background
Category議員
Detail元参議院議員、税理士
Incumbency & Career Wins
- Status entering the 2021 election: Former
- Total recorded wins to date: 1
- Age at time of election: 59
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 阿部 知子 | CDP | 95,013 | 42.4% |
| #2 | 星野 剛士 | LDP | 91,159 | 40.7% |
| #3 | 水戸 将史 this page | Ishin | 37,753 | 16.9% |
Same-Party Peers in 2021
- 中津川 博郷 — Tokyo 16th District, 17.1% (Lost)
- 木内 孝胤 — Tokyo 2nd District, 16.7% (Lost)
- 横田 光弘 — Kanagawa 18th District, 16.5% (Lost)
- 山崎 泉 — Hokkaido 2nd District, 17.4% (Lost)
- 空本 誠喜 — Hiroshima 4th District, 17.9% (Lost)
Candidates with Similar Vote Share
- 地坂 拓晃 (JCP, Kyoto 2nd District) — 17.0%
- 内藤 隆司 (JCP, Miyagi 6th District) — 16.8%
- 工藤 薫 (JCP, Saitama 4th District) — 17.0%
- 中津川 博郷 (Ishin, Tokyo 16th District) — 17.1%
- 大石 晃子 (Reiwa, Osaka 5th District) — 17.1%
Career Timeline
Elections
2
Career Wins
0
Total Votes
67,211
Best Vote Share
16.9%
| Year | District | Party | System | Votes | Share | Rank | Result |
|---|---|---|---|---|---|---|---|
| 2024 | Kanagawa 12th District | Ishin | Single-member | 29,458 | 13.9% | #3 | Lost |
| 2021 | Kanagawa 12th District | Ishin | Single-member | 37,753 | 16.9% | #3 | Lost |
Kanagawa 12th District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 星野 剛士 | LDP | 108,343 | 49.4% | 4 | 29,550 |
| 2024 | 阿部 知子 | CDP | 84,310 | 39.7% | 5 | 18,626 |
| 2021 | 阿部 知子 | CDP | 95,013 | 42.4% | 3 | 3,854 |
Kanagawa Snapshot (2021)
Districts
18
Candidates
51
Seats Filled
18
Active Parties
8
Party representation across Kanagawa
LDP17 cand · 11 won
CDP15 cand · 7 won
Ishin7 cand · 0 won
JCP5 cand · 0 won
Independent4 cand · 0 won
DPP1 cand · 0 won
SDP1 cand · 0 won
NHK Party1 cand · 0 won
Top performers across Kanagawa (2021)
| Candidate | District | Party | Votes | Share | Result |
|---|---|---|---|---|---|
| 河野 太郎 | Kanagawa 15th District | LDP | 210,515 | 79.3% | Won |
| 小泉 進次郎 | Kanagawa 11th District | LDP | 147,634 | 79.2% | Won |
| 菅 義偉 | Kanagawa 2nd District | LDP | 146,166 | 61.1% | Won |
| 後藤 祐一 | Kanagawa 16th District | CDP | 137,558 | 54.6% | Won |
| 坂井 学 | Kanagawa 5th District | LDP | 136,288 | 53.5% | Won |
| 赤間 二郎 | Kanagawa 14th District | LDP | 135,197 | 53.8% | Won |
| 牧島 かれん | Kanagawa 17th District | LDP | 131,284 | 55.3% | Won |
Where 水戸 将史 ranks
Among Ishin single-member candidates in 2021
Higher vote share than 36.2% (34 of 94)
Among ALL single-member candidates in 2021
Higher vote share than 26.7% (229 of 857)
議員 cohort (2021)
Cohort Size
142
Cohort Wins
64
Cohort Avg Share
30.4%
Cohort Avg Age
53
水戸 将史's 16.9% vote share is 13.51 percentage points below the 議員 cohort average for 2021.
Frequently Asked Questions
How many times has 水戸 将史 run for the House of Representatives?expand_more
水戸 将史 has appeared in 2 recorded elections, winning 0 of them. The most recent was 2021.
Who has won Kanagawa 12th District in recent elections?expand_more
Recorded winners of Kanagawa 12th District: 星野 剛士 (2026); 阿部 知子 (2024); 阿部 知子 (2021).
How many Kanagawa districts ran candidates in 2021?expand_more
Kanagawa had 18 districts with 51 total candidates in 2021, of whom 18 won seats.
Did 水戸 将史 win the 2021 election?expand_more
水戸 将史 did not win the 2021 House of Representatives race in Kanagawa 12th District, recording 37,753 votes (16.9%).
Which party did 水戸 将史 represent?expand_more
水戸 将史 ran as a Ishin candidate. The party fielded 119 candidates in 2021.
Who won Kanagawa 12th District in 2021?expand_more
阿部 知子 (CDP) won Kanagawa 12th District with 95,013 votes, a vote share of 42.4%.