Candidates
原口 一博 — Saga 1st District 2021
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Won in Saga 1st District (2021) — 92,452 votes (50.0%), rank #1 of 2.
- chevron_rightProfile: Male, age 62. Background: 政党役職. Status entering: Incumbent.
- chevron_rightCareer wins to date: 9
fact_check Quick Facts
Age
62 yrs
Gender
male ♂ Male
Election Date
Th10 31, 2021
System
Single-member
Seats Recorded
1
Election Performance
Vote Count & Share
Votes
92,452
Vote Share
50.0%
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政党役職
Detail立憲民主党副代表、元総務大臣
Incumbency & Career Wins
- Status entering the 2021 election: Incumbent
- Total recorded wins to date: 9
- Age at time of election: 62
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 原口 一博 this page | CDP | 92,452 | 50.0% |
| #2 | 岩田 和親 | LDP | 92,319 | 50.0% |
Same-Party Peers in 2021
- 菊田 真紀子 — Niigata 4th District, 50.1% (Won)
- 大築 紅葉 — Hokkaido 4th District, 49.8% (Lost)
- 吉川 元 — Oita 2nd District, 49.8% (Lost)
- 伴野 豊 — Aichi 8th District, 49.8% (Lost)
- 中川 正春 — Mie 2nd District, 49.8% (Lost)
Candidates with Similar Vote Share
- 岩田 和親 (LDP, Saga 1st District) — 50.0%
- 藤井 比早之 (LDP, Hyogo 4th District) — 50.0%
- 下村 博文 (LDP, Tokyo 11th District) — 50.0%
- 平沢 勝栄 (LDP, Tokyo 17th District) — 50.1%
- 菊田 真紀子 (CDP, Niigata 4th District) — 50.1%
Career Timeline
Elections
3
Career Wins
2
Total Votes
271,563
Best Vote Share
54.7%
| Year | District | Party | System | Votes | Share | Rank | Result |
|---|---|---|---|---|---|---|---|
| 2026 | Saga 1st District | 減ゆ | Single-member | 83,028 | 45.0% | #2 | Lost |
| 2024 | Saga 1st District | CDP | Single-member | 96,083 | 54.7% | #1 | Won |
| 2021 | Saga 1st District | CDP | Single-member | 92,452 | 50.0% | #1 | Won |
Saga 1st District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 岩田 和親 | LDP | 84,220 | 45.7% | 3 | 1,192 |
| 2024 | 原口 一博 | CDP | 96,083 | 54.7% | 2 | 16,360 |
| 2021 | 原口 一博 | CDP | 92,452 | 50.0% | 2 | 133 |
Where 原口 一博 ranks
Among CDP single-member candidates in 2021
Higher vote share than 84.1% (180 of 214)
Among ALL single-member candidates in 2021
Higher vote share than 76.5% (656 of 857)
政党役職 cohort (2021)
Cohort Size
210
Cohort Wins
98
Cohort Avg Share
33.5%
Cohort Avg Age
56
原口 一博's 50.0% vote share is 16.47 percentage points above the 政党役職 cohort average for 2021.
Frequently Asked Questions
How many times has 原口 一博 run for the House of Representatives?expand_more
原口 一博 has appeared in 3 recorded elections, winning 2 of them. The most recent was 2021.
Who has won Saga 1st District in recent elections?expand_more
Recorded winners of Saga 1st District: 岩田 和親 (2026); 原口 一博 (2024); 原口 一博 (2021).
Did 原口 一博 win the 2021 election?expand_more
原口 一博 won the 2021 House of Representatives race in Saga 1st District, recording 92,452 votes (50.0%).
Which party did 原口 一博 represent?expand_more
原口 一博 ran as a CDP candidate. The party fielded 253 candidates in 2021.
Who won Saga 1st District in 2021?expand_more
原口 一博 (CDP) won Saga 1st District with 92,452 votes, a vote share of 50.0%.