The Kōchi at-large district (Japanese: 高知県全県区, Hepburn: Kōchi-ken Zenken-ku) was a multi-member electoral district represented in the House of Representatives in the National Diet of Japan.
In the 1947 Japanese general election, conservative parties won a majority of seats, with prime minister Shigeru Yoshida leading in the polls.
Subsequently, they would continue winning majorities in the district, a trend that persisted after these parties merged to create the LDP until the 1967 Japanese general election.
[1] In the 1967 Japanese general election, the Kōmeitō ran in the district for the first time, winning in third-place.
[1] Afterwards, the party would win a seat from the district except in the 1972 Japanese general election, with Akira Nakano [ja], Masatarō Hiraishi [ja], and Noritoshi Ishida being the Kōmeitō's representatives for the district.