TIGER/Line Shapefile, 2015, Series Information for the Current State Legislative District (SLD) Lower Chamber State-based Shapefile
State Legislative Districts (SLDs) are the areas from which members are elected to State legislatures. The SLDs embody the upper (senate) and lower (house) chambers of the state legislature. Nebraska
               has a unicameral legislature and the District of Columbia has a single council, both of which the Census …