Candidates
山口 孝司 — Nagano 3rd District 2026
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Lost in Nagano 3rd District (2026) — 11,296 votes (4.9%), rank #4 of 4.
- chevron_rightProfile: Male, age 61. Background: その他. Status entering: Newcomer.
fact_check Quick Facts
Age
61 yrs
Gender
male ♂ Male
Election Date
Th10 22, 2026
System
Single-member
Seats Recorded
—
Election Performance
Vote Count & Share
Votes
11,296
Vote Share
4.9%
Rank
#4
Outcome
Lost
Win/Loss Outcome
Outcome
Did not win seat in 2026
Political Context
Party Affiliation
Reiwa
れいわ
Party Candidates 2026
19
Party Seats Won
1
Prefectures
17
Avg Share
7.2%
Occupation & Background
Categoryその他
Detail社会福祉士
Incumbency & Career Wins
- Status entering the 2026 election: Newcomer
- Age at time of election: 61
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 井出 庸生 | LDP | 111,844 | 48.3% |
| #2 | 神津 健 | Centrist | 81,922 | 35.4% |
| #3 | 仁科 裕貴 | Sanseito | 26,407 | 11.4% |
| #4 | 山口 孝司 this page | Reiwa | 11,296 | 4.9% |
Same-Party Peers in 2026
- 八幡 愛 — Osaka 13th District, 4.9% (Lost)
- 辻 恵 — Aichi 15th District, 4.9% (Lost)
- 鈴木 智 — Shizuoka 4th District, 5.0% (Lost)
- 加川 裕美 — Ibaraki 3rd District, 5.0% (Lost)
- 海保 杜久麻 — Tokyo 8th District, 4.7% (Lost)
Candidates with Similar Vote Share
- 八幡 愛 (Reiwa, Osaka 13th District) — 4.9%
- 菅沼 桂子 (Sanseito, Tokyo 26th District) — 4.9%
- 辻 恵 (Reiwa, Aichi 15th District) — 4.9%
- 前田 雄吉 (減ゆ, Aichi 16th District) — 4.9%
- 濱 共生 (JCP, Tokushima 2nd District) — 4.9%
Nagano 3rd District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 井出 庸生 | LDP | 111,844 | 48.3% | 4 | 29,922 |
| 2024 | 神津 健 | CDP | 121,594 | 55.0% | 2 | 22,163 |
| 2021 | 井出 庸生 | LDP | 120,023 | 51.5% | 3 | 10,844 |
Nagano Snapshot (2026)
Districts
5
Candidates
16
Seats Filled
5
Active Parties
7
Party representation across Nagano
LDP5 cand · 5 won
Centrist4 cand · 0 won
Ishin2 cand · 0 won
Sanseito2 cand · 0 won
Reiwa1 cand · 0 won
DPP1 cand · 0 won
JCP1 cand · 0 won
Top performers across Nagano (2026)
| Candidate | District | Party | Votes | Share | Result |
|---|---|---|---|---|---|
| 若林 健太 | Nagano 1st District | LDP | 119,101 | 50.7% | Won |
| 井出 庸生 | Nagano 3rd District | LDP | 111,844 | 48.3% | Won |
| 藤田 ひかる | Nagano 2nd District | LDP | 104,107 | 46.7% | Won |
| 宮下 一郎 | Nagano 5th District | LDP | 98,866 | 59.8% | Won |
| 篠原 孝 | Nagano 1st District | Centrist | 86,458 | 36.8% | Lost |
| 神津 健 | Nagano 3rd District | Centrist | 81,922 | 35.4% | Lost |
| 後藤 茂之 | Nagano 4th District | LDP | 77,135 | 57.6% | Won |
Where 山口 孝司 ranks
Among Reiwa single-member candidates in 2026
Higher vote share than 22.2% (4 of 18)
Among ALL single-member candidates in 2026
Higher vote share than 7.5% (84 of 1119)
その他 cohort (2026)
Cohort Size
224
Cohort Wins
17
Cohort Avg Share
15.0%
Cohort Avg Age
51
山口 孝司's 4.9% vote share is 10.08 percentage points below the その他 cohort average for 2026.
Frequently Asked Questions
Who has won Nagano 3rd District in recent elections?expand_more
Recorded winners of Nagano 3rd District: 井出 庸生 (2026); 神津 健 (2024); 井出 庸生 (2021).
How many Nagano districts ran candidates in 2026?expand_more
Nagano had 5 districts with 16 total candidates in 2026, of whom 5 won seats.
Did 山口 孝司 win the 2026 election?expand_more
山口 孝司 did not win the 2026 House of Representatives race in Nagano 3rd District, recording 11,296 votes (4.9%).
Which party did 山口 孝司 represent?expand_more
山口 孝司 ran as a Reiwa candidate. The party fielded 19 candidates in 2026.
Who won Nagano 3rd District in 2026?expand_more
井出 庸生 (LDP) won Nagano 3rd District with 111,844 votes, a vote share of 48.3%.