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Candidates

斎藤 洋明 — Niigata 3rd District 2021

Updated 25 Tháng 5, 2026
  • chevron_rightOutcome: Won in Niigata 3rd District (2021) — 102,564 votes (53.6%), rank #1 of 2.
  • chevron_rightProfile: Male, age 44. Background: 政党役職. Status entering: Incumbent.
  • chevron_rightEndorsed by: 公明
  • chevron_rightCareer wins to date: 4
fact_check Quick Facts
Age
44 yrs
Gender
male ♂ Male
Election Date
Th10 31, 2021
System
Single-member
Seats Recorded
1

Election Performance

Vote Count & Share

Votes
102,564
Vote Share
53.6%
Rank
#1
Outcome
Won

Win/Loss Outcome

Seat
Elected to the House of Representatives

Political Context

Party Affiliation

LDP
自民
Party Candidates 2021
351
Party Seats Won
261
Prefectures
58
Avg Share
51.1%

Occupation & Background

Category政党役職
Detail自民党総務部会長代理、元総務政務官

Incumbency & Career Wins

  • Status entering the 2021 election: Incumbent
  • Total recorded wins to date: 4
  • Age at time of election: 44

Endorsements

公明

Comparative Snapshot

Same District Rivals

RankCandidatePartyVotesShare
#1斎藤 洋明 this pageLDP102,56453.6%
#2黒岩 宇洋CDP88,74446.4%

Same-Party Peers in 2021

  • 葉梨 康弘 — Ibaraki 3rd District, 53.6% (Won)
  • 黄川田 仁志 — Saitama 3rd District, 53.6% (Won)
  • 坂井 学 — Kanagawa 5th District, 53.5% (Won)
  • 赤間 二郎 — Kanagawa 14th District, 53.8% (Won)
  • 大塚 拓 — Saitama 9th District, 53.4% (Won)

Candidates with Similar Vote Share

  • 馬場 伸幸 (Ishin, Osaka 17th District) — 53.6%
  • 葉梨 康弘 (LDP, Ibaraki 3rd District) — 53.6%
  • 黄川田 仁志 (LDP, Saitama 3rd District) — 53.6%
  • 坂井 学 (LDP, Kanagawa 5th District) — 53.5%
  • 赤間 二郎 (LDP, Kanagawa 14th District) — 53.8%

Career Timeline

Elections
4
Career Wins
3
Total Votes
313,540
Best Vote Share
54.6%
YearDistrictPartySystemVotesShareRankResult
2026Niigata 3rd DistrictLDPSingle-member115,99154.6%#1Won
2024Niigata 3rd DistrictLDPSingle-member94,98444.5%#2Lost
2024Hokuriku-Shinetsu Block (PR Block)LDPPR Block10.0%#2Won
2021Niigata 3rd DistrictLDPSingle-member102,56453.6%#1Won

Niigata 3rd District Historical Context

YearWinnerPartyWinning VotesWinning ShareField SizeMargin
2026斎藤 洋明LDP115,99154.6%339,539
2024黒岩 宇洋CDP105,27549.3%310,291
2021斎藤 洋明LDP102,56453.6%213,820

Niigata Snapshot (2021)

Districts
6
Candidates
16
Seats Filled
6
Active Parties
6

Party representation across Niigata

LDP6 cand · 2 won
CDP4 cand · 3 won
Independent3 cand · 1 won
Ishin1 cand · 0 won
DPP1 cand · 0 won
JCP1 cand · 0 won

Top performers across Niigata (2021)

CandidateDistrictPartyVotesShareResult
西村 智奈美Niigata 1st DistrictCDP127,36552.6%Won
細田 健一Niigata 2nd DistrictLDP105,42659.9%Won
菊田 真紀子Niigata 4th DistrictCDP97,49450.1%Won
国定 勇人Niigata 4th DistrictLDP97,25649.9%Lost
塚田 一郎Niigata 1st DistrictLDP96,59139.9%Lost
梅谷 守Niigata 6th DistrictCDP90,67949.6%Won
高鳥 修一Niigata 6th DistrictLDP90,54949.5%Lost

Where 斎藤 洋明 ranks

Among LDP single-member candidates in 2021
Higher vote share than 62.7% (175 of 279)
Among ALL single-member candidates in 2021
Higher vote share than 85.1% (729 of 857)

政党役職 cohort (2021)

Cohort Size
210
Cohort Wins
98
Cohort Avg Share
33.5%
Cohort Avg Age
56

斎藤 洋明's 53.6% vote share is 20.07 percentage points above the 政党役職 cohort average for 2021.

Frequently Asked Questions

How many times has 斎藤 洋明 run for the House of Representatives?expand_more
斎藤 洋明 has appeared in 4 recorded elections, winning 3 of them. The most recent was 2021.
Who has won Niigata 3rd District in recent elections?expand_more
Recorded winners of Niigata 3rd District: 斎藤 洋明 (2026); 黒岩 宇洋 (2024); 斎藤 洋明 (2021).
How many Niigata districts ran candidates in 2021?expand_more
Niigata had 6 districts with 16 total candidates in 2021, of whom 6 won seats.
Did 斎藤 洋明 win the 2021 election?expand_more
斎藤 洋明 won the 2021 House of Representatives race in Niigata 3rd District, recording 102,564 votes (53.6%).
Which party did 斎藤 洋明 represent?expand_more
斎藤 洋明 ran as a LDP candidate. The party fielded 351 candidates in 2021.
Who won Niigata 3rd District in 2021?expand_more
斎藤 洋明 (LDP) won Niigata 3rd District with 102,564 votes, a vote share of 53.6%.