Readers may find this of interest. As part of a project on vote-trading (aka logrolling) Matt and I are working on, the below is a picture of the Senate Chamber seats with the color scaled to the amount of pork-barrel spending in millions of dollars. It is much easier to see if you click on the image itself.
Here is the same map, this time scaled according to the number of years in the Senate:
A map based on the number of pork projects is almost identical to the pork spending map at the top. I'm surprised that tenure map doesn't look more similar to the spending map. Any thoughts?