The is a constituency that represents Yamagata Prefecture in the House of Councillors in the Diet of Japan. Councillors are elected to the house by single non-transferable vote (SNTV) for six-year terms. Since the establishment of the current House of Councillors electoral system in 1947, the district has elected two Councillors, one each at elections held every three years. It has 937,920 registered voters as of September 2015.[1]
| Yamagata at-large district | |
| Type: | Parliamentary |
| Parl Name: | House of Councillors |
| District Label: | Prefecture |
| District: | Yamagata |
| Electorate: | 898,671 (as of September 2022)[2] |
| Year: | 1947 |
| Seats: | 2 |
| Member Label: | Councillors |
| Member: | Class of 2019: Michiya Haga（Independent） Class of 2022: Yasue Funayama （DPP） |
| class of 1947 | election year | class of 1950 |
|---|---|---|
| (1947: 6-year term) | (1947: 3-year term) | |
| Shigeyasu Kosugi (Ind.) | 1947 | Rokurōbē Ogata (Ind.) |
| 1950 | Mataji Kobayashi (Socialist) | |
| Saburo Unno (Left Socialist) | 1953 | |
| 1956 | Yasusuke Matsuzawa (Socialist) | |
| Michio Murayama (LDP) | 1959 | |
| 1959 by-el. | Isami Shirai (LDP) | |
| 1962 | Isami Shirai (LDP) | |
| Gorō Itō (LDP) | 1965 | |
| 1968 | Isami Shirai (LDP) | |
| Gorō Itō (LDP) | 1971 | |
| 1974 | Tōkichi Abiko (LDP) | |
| Keigi Furuya (LDP) | 1977 | |
| 1980 | Tōkichi Abiko (LDP) | |
| Keigi Furuya (LDP) | 1983 | |
| 1986 | Teibin Suzuki (LDP) | |
| Yasumatsu Hoshikawa (Rengō no Kai) | 1989 | |
| 1992 | Teibin Suzuki (LDP) | |
| Masatoshi Abe (Ind.) | 1995 | |
| 1998 | Koichi Kishi (LDP) | |
| Masatoshi Abe (LDP) | 2001 | |
| 2004 | Koichi Kishi (LDP) | |
| Yasue Funayama (DPJ) | 2007[3] | |
| 2010[4] | Koichi Kishi (LDP) | |
| Mizuho Onuma (LDP) | 2013[5] | |
| 2016[6] | Yasue Funayama (Ind.) | |
| Michiya Haga (Ind.) | 2019[7] | |
| 2022 | Yasue Funayama (DPP) |