Nagasaki 4th district

Nagasaki 4th District (長崎県第4区) was a single-member electoral district for the House of Representatives, the lower house of the National Diet of Japan. It was located in western Nagasaki and consisted of the cities of Sasebo, Hirado, Matsuura and Saikai, as well as Kitamatsuura District. As of 2021, 250,004 eligible voters were registered in the district.

Area covered
The district was redrawn twice between its creation in 1994 and its abolition, once in 2013 and once again in 2017. The district was abolished during redistricting in 2022, and the areas it covered as of 2022 were transferred to the 3rd district.

Areas 2017–2022
After the 2017 revisions, the areas covered by the district are as follows:


 * Sasebo (excluding the Haiki, Mikawachi and Miya Branch Departments)
 * Hirado, Nagasaki
 * Matsuura, Nagasaki
 * Saikai, Nagasaki
 * Kitamatsuura District
 * Saza, Nagasaki

Due to the redrawing of the district borders, Ojika, Nagasaki was moved to the 3rd district, while Saikai was gained from the 2nd district

Areas 2013–2017
From the redistricting in 2013 until the redistricting in 2017, the areas covered by the district are as follows:
 * Sasebo (excluding the Haiki, Mikawachi and Miya Branch Departments)
 * Hirado, Nagasaki
 * Matsuura, Nagasaki
 * Kitamatsuura District

Areas from before 2013
From its formation in 1994, until its first redistricting in 2013, the areas covered by this district were as follows:


 * Sasebo
 * Hirado
 * Matsuura
 * Kitamatsuura District