Candidates
上田 敦広 — Chiba 1st District 2026
Updated 25 Tháng 5, 2026
- chevron_rightOutcome: Lost in Chiba 1st District (2026) — 33,443 votes (14.3%), rank #3 of 3.
- chevron_rightProfile: Male, age 42. Background: その他. Status entering: Newcomer.
fact_check Quick Facts
Age
42 yrs
Gender
male ♂ Male
Election Date
Th10 22, 2026
System
Single-member
Seats Recorded
—
Election Performance
Vote Count & Share
Votes
33,443
Vote Share
14.3%
Rank
#3
Outcome
Lost
Win/Loss Outcome
Outcome
Did not win seat in 2026
Political Context
Party Affiliation
Sanseito
参政
Party Candidates 2026
197
Party Seats Won
15
Prefectures
56
Avg Share
10.8%
Occupation & Background
Categoryその他
Detailケアマネージャー
Incumbency & Career Wins
- Status entering the 2026 election: Newcomer
- Age at time of election: 42
Comparative Snapshot
Same District Rivals
| Rank | Candidate | Party | Votes | Share |
|---|---|---|---|---|
| #1 | 門山 宏哲 | LDP | 109,771 | 46.8% |
| #2 | 田嶋 要 | Centrist | 91,149 | 38.9% |
| #3 | 上田 敦広 this page | Sanseito | 33,443 | 14.3% |
Same-Party Peers in 2026
- 中島 良樹 — Hokkaido 3rd District, 14.2% (Lost)
- 中谷 めぐ — Chiba 13th District, 14.2% (Lost)
- 春日 舞 — Aichi 6th District, 14.2% (Lost)
- 及川 泰輔 — Iwate 3rd District, 14.1% (Lost)
- 吉富 景子 — Fukuoka 1st District, 14.5% (Lost)
Candidates with Similar Vote Share
- 内藤 耕一 (JCP, Osaka 14th District) — 14.3%
- 中島 良樹 (Sanseito, Hokkaido 3rd District) — 14.2%
- 西尾 慧吾 (SDP, Osaka 9th District) — 14.4%
- 中谷 めぐ (Sanseito, Chiba 13th District) — 14.2%
- 春日 舞 (Sanseito, Aichi 6th District) — 14.2%
Career Timeline
Elections
2
Career Wins
0
Total Votes
49,146
Best Vote Share
14.3%
| Year | District | Party | System | Votes | Share | Rank | Result |
|---|---|---|---|---|---|---|---|
| 2026 | Chiba 1st District | Sanseito | Single-member | 33,443 | 14.3% | #3 | Lost |
| 2024 | Chiba 1st District | Sanseito | Single-member | 15,703 | 6.9% | #4 | Lost |
Chiba 1st District Historical Context
| Year | Winner | Party | Winning Votes | Winning Share | Field Size | Margin |
|---|---|---|---|---|---|---|
| 2026 | 門山 宏哲 | LDP | 109,771 | 46.8% | 3 | 18,622 |
| 2024 | 田嶋 要 | CDP | 107,439 | 47.3% | 5 | 40,007 |
| 2021 | 田嶋 要 | CDP | 128,556 | 56.3% | 2 | 28,661 |
Chiba Snapshot (2026)
Districts
14
Candidates
52
Seats Filled
14
Active Parties
9
Party representation across Chiba
LDP14 cand · 13 won
Centrist12 cand · 1 won
Sanseito9 cand · 0 won
JCP8 cand · 0 won
DPP3 cand · 0 won
減ゆ2 cand · 0 won
Ishin2 cand · 0 won
Mirai1 cand · 0 won
Independent1 cand · 0 won
Top performers across Chiba (2026)
| Candidate | District | Party | Votes | Share | Result |
|---|---|---|---|---|---|
| 浜田 靖一 | Chiba 12th District | LDP | 129,997 | 71.5% | Won |
| 松本 尚 | Chiba 13th District | LDP | 121,796 | 53.9% | Won |
| 門山 宏哲 | Chiba 1st District | LDP | 109,771 | 46.8% | Won |
| 小林 鷹之 | Chiba 2nd District | LDP | 107,933 | 67.5% | Won |
| 鹿嶋 祐介 | Chiba 4th District | LDP | 106,236 | 48.2% | Won |
| 森 英介 | Chiba 11th District | LDP | 102,843 | 61.5% | Won |
| 齋藤 健 | Chiba 7th District | LDP | 100,339 | 64.0% | Won |
Where 上田 敦広 ranks
Among Sanseito single-member candidates in 2026
Higher vote share than 88.5% (161 of 182)
Among ALL single-member candidates in 2026
Higher vote share than 41.8% (468 of 1119)
その他 cohort (2026)
Cohort Size
224
Cohort Wins
17
Cohort Avg Share
15.0%
Cohort Avg Age
51
上田 敦広's 14.3% vote share is 0.68 percentage points below the その他 cohort average for 2026.
Frequently Asked Questions
How many times has 上田 敦広 run for the House of Representatives?expand_more
上田 敦広 has appeared in 2 recorded elections, winning 0 of them. The most recent was 2026.
Who has won Chiba 1st District in recent elections?expand_more
Recorded winners of Chiba 1st District: 門山 宏哲 (2026); 田嶋 要 (2024); 田嶋 要 (2021).
How many Chiba districts ran candidates in 2026?expand_more
Chiba had 14 districts with 52 total candidates in 2026, of whom 14 won seats.
Did 上田 敦広 win the 2026 election?expand_more
上田 敦広 did not win the 2026 House of Representatives race in Chiba 1st District, recording 33,443 votes (14.3%).
Which party did 上田 敦広 represent?expand_more
上田 敦広 ran as a Sanseito candidate. The party fielded 197 candidates in 2026.
Who won Chiba 1st District in 2026?expand_more
門山 宏哲 (LDP) won Chiba 1st District with 109,771 votes, a vote share of 46.8%.