Knox County has decided that voter privacy is bunk. As long as you certify the information is for political reasons only, Knox County Election Commission will send you a list of active and inactive voters and their history. Cost? Free!
We have changed our policy concerning purchase of voter lists on disk. If you will print out, fill in and send us the Certification for Purchase of Voter List on CD (http://www.knoxcounty.org/election/pdfs/request_form_disk_list.pdf) we will send you a disk with all the active and inactive voters and their history. For free. [Source]
I wonder just how detailed that history is?