Data
Republic of Korea (South Korea)
Republic of Korea (South Korea)
Shapefiles on electoral boundaries for the legislative elections in 2012 and 2016, after reapportionment (shoot me an email if you like to use these maps).
Japan
Japan
Shapefiles on electoral boundaries valid for the general elections in 1993, 1996-2000, 2014, 2017.
France
France
Shapefiles on electoral boundaries for the legislative elections in 2007 and 2012, after reapportionment.