Kanagawa 10th district (神奈川[県第]10区, Kanagawa[-ken dai-]jikku) is a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan.

[2] In redistricting in 2022 all areas of Nakahara Ward were transferred to the 18th district.

Tanaka who became Senior Vice Minister during the Koizumi and First Abe Cabinets held onto the 10th district until the landslide election of 2009 when he lost to Democrat Kōriki Jōjima (Kawabata group=ex-DSP faction) who had been a representative from Tokyo (under his real name Masamitsu Jōjima) between 1996 and 2005.

In 2012, he was voted out of the House of Representatives alongside seven other sitting ministers in the Noda Cabinet.

Tanaka was again appointed as a Senior Vice Minister in the Second Abe Cabinet.