A lovely organization co-membership network graph of the delegates to the 2008 party conventions. From Networking the Parties: A Comparative Study of Democratic and Republican Convention Delegates in 2008 (Pre-print. Seth Masket, Michael Heaney, Joanne Miller, and Dara Z. Strolovich). The authors surveyed the delegates at the major party conventions about which groups they were members of. Nodes are groups, links indicate delegates who named both groups. Red only nominated by Republican delegates, Blue only Democratic, Purple = Both. The image gives a nice quick overview of the relative positions of groups, the paper gives more detailed analysis.
Interesting but not surprising to see the Sierra Club / NRA relationship, and NAACP / Young Republicans membership as well. I’m curious what the single red node is between Amnesty International and Sierra Club… Would like to see a version with all the organization names. Does this image match your intuitive sense of the relative political positions of the organizations named?