Ibaraki 4th district

Ibaraki 4th district is a single-member constituency of the House of Representatives in the Diet of Japan. It is located in Northern Ibaraki and consists of the cities of Hitachinaka, Hitachiōta, Hitachiōmiya and Naka and the town of Daigo. As of 2021, 268,147 eligible voters were registered in the district.
Before the electoral reform of 1994, the area was part of the multi-member Ibaraki 2nd district where three Representatives had been elected by single non-transferable vote.
Ibaraki 4th district is a "conservative kingdom", a stronghold of the Liberal Democratic Party. It wasn't even contested by the main opposition Democratic Party in the 2000 and 2003 general elections and withstood the Democratic landslide victory in the election of 2009. Since its creation the district has been represented by the Kajiyama family for the LDP: former Trade, Home, Justice Minister and Chief Cabinet Secretary Seiroku Kajiyama and his son Hiroshi.

Election results

|party = Liberal Democratic Party
|candidate = Hiroshi Kajiyama
|votes = 95,655
|percentage = 64.5
|change = 0.6
Election box candidate with party link|
|party = Democratic Party of Japan
|candidate = Mamoru Takano
|votes = 41,507
|percentage = 28.0
|change = 0.3
Election box candidate with party link|
|party = Japanese Communist Party
|candidate = Kakuji Horie
|votes = 9,331
|percentage = 6.3
|change = 0.9
Election box candidate with party link|
|party = Independent
|candidate = Takashi Kimura
|votes = 1874
|percentage = 1.3
|change =
Election box turnout
|votes=
|percentage = 55.92
|change=
Election box hold with party link without swing
|winner= Liberal Democratic Party of Japan
Election box endElection box begin | title=2012Election box candidate with party link|
|party = Liberal Democratic Party
|candidate = Hiroshi Kajiyama
|votes = 113,718
|percentage = 65.1
|change =
Election box candidate with party link|
|party = Democratic Party of Japan
|candidate = Mamoru Takano
|votes = 48,395
|percentage = 27.7
|change =
Election box candidate with party link|
|party = Japanese Communist Party
|candidate = Shūji Uno
|votes = 12,555
|percentage = 7.2
|change =
Election box endElection box begin | title=2009Election box candidate with party link|
|party = Liberal Democratic Party
|candidate = Hiroshi Kajiyama
|votes = 104,236
|percentage = 50.7
|change =
Election box candidate with party link|
|party = Democratic Party of Japan
|candidate = Mamoru Takano
|votes = 97,256
|percentage = 47.3
|change =
Election box candidate with party link|
|party = Happiness Realization Party
|candidate = Nobutake Nakamura
|votes = 3,968
|percentage = 1.9
|change =
Election box turnout|
|votes = 210,007
|percentage = 69.16
|change =
Election box endElection box begin | title=2005Election box candidate with party link|
|party = Liberal Democratic Party
|candidate = Hiroshi Kajiyama
|votes = 122,200
|percentage = 63.2
|change =
Election box candidate with party link|
|party = Democratic Party of Japan
|candidate = Mamoru Takano
|votes = 59,941
|percentage = 31.0
|change =
Election box candidate with party link|
|party = Japanese Communist Party
|candidate = Atsuko Kawasaki
|votes = 11,212
|percentage = 5.8
|change =
Election box turnout|
|votes = 198,451
|percentage = 65.77
|change =
Election box endElection box begin | title=2003Election box candidate with party link|
|party = Liberal Democratic Party
|candidate = Hiroshi Kajiyama
|votes = 119,047
|percentage = 74.1
|change =
Election box candidate with party link|
|party = Social Democratic Party
|candidate = Shūichi Ōshima
|votes = 28,660
|percentage = 17.8
|change =
Election box candidate with party link|
|party = Japanese Communist Party
|candidate = Atsuko Kawasaki
|votes = 11,212
|percentage = 8.1
|change =
Election box turnout|
|votes = 165,512
|percentage = 55.24
|change =
Election box endElection box begin | title=2000Election box candidate with party link|
|party = Liberal Democratic Party
|candidate = Hiroshi Kajiyama
|votes = 139,817
|percentage = 83.4
|change =
Election box candidate with party link|
|party = Japanese Communist Party
|candidate = Kiichi Ōwada
|votes = 27,927
|percentage = 16.6
|change =
Election box endElection box begin | title=1996Election box candidate with party link|
|party = Liberal Democratic Party
|candidate = Seiroku Kajiyama
|votes = 112,977
|percentage = 68.3
|change =
Election box candidate with party link|
|party = New Frontier Party
|candidate = Shūichi Ōshima
|votes = 38,028
|percentage = 23.0
|change =
Election box candidate with party link|
|party = Japanese Communist Party
|candidate = Michinao Nemoto
|votes = 14,325
|percentage = 8.7
|change =
Election box turnout|
|votes = 170,802
|percentage = 59.58
|change =
Election box end