Ideology                Fording's State Ideology Data
Ideology_ERA            Fording's State Ideology Data (adapted, with
                        E.R.A. status)
State_Neighbors         US State Neighbor List
US_Counties             US Counties Information for Merging
US_States               US States Information for Merging
geog.diffuse            Calculating Geographical Diffusion
ideo.dist               Calculating Ideological Distance
