The is a constituency that represents Yamanashi Prefecture in the House of Councillors in the Diet of Japan. It has two Councillors in the 242-member house.
| Yamanashi at-large district | |
| Type: | Parliamentary |
| Parl Name: | House of Councillors |
| District Label: | Prefecture |
| District: | Yamanashi |
| Electorate: | 685,381 (as of September 2022)[1] |
| Year: | 1947 |
| Seats: | 2 |
| Member Label: | Councillors |
| Member: | Class of 2019: Hiroshi Moriya（Liberal Democratic） Class of 2022: Manabu Nagai（Liberal Democratic） |
The constituency represents the entire population of Yamanashi Prefecture. The district elects two Councillors to six-year terms, one at alternating elections held every three years. The district has 692,001 registered voters as of September 2015.[2] The Councillors currently representing Yamanashi are:
| Class of 1947 | election year | Class of 1950 (3-year term in 1947) | |
|---|---|---|---|
| Tsunekichi Komiyama (Ind.) | 1947 | Shigeko Hirano (Socialist) | |
| 1950 | Taichi Hirabayashi (Ind.) | ||
(Ind.) | 1953 | ||
| 1956 | (LDP) | ||
| Toshio Yasuda (Socialist) | 1959 | ||
| 1962 | (LDP) | ||
| Hisatada Hirose (LDP) | 1965 | ||
| 1968 | (LDP) | ||
| 1970 by-election | Jūji Hoshino (LDP) | ||
(Socialist) | 1971 | ||
| 1974 | (LDP) | ||
| Keiyu Furuya (LDP) | 1977 | ||
| 1980 | (LDP) | ||
(LDP) | 1983 | ||
| 1986 | (LDP) | ||
(Rengō no Kai) | 1989 | ||
| 1992 | Tetsuro Shimura (LDP) | ||
(LDP) | 1995 | ||
| 1998 | Azuma Koshiishi (Independent) | ||
(LDP) | 2001 | ||
| 2004[4] | Azuma Koshiishi (DPJ) | ||
| Harunobu Yonenaga (DPJ) | 2007[5] | ||
| 2010[6] | Azuma Koshiishi (DPJ) | ||
| Hiroshi Moriya (LDP) | 2013[7] | ||
| 2016 | (DP) | ||
| Hiroshi Moriya (LDP) | 2019 | ||
| 2022 | (LDP) |