TomPaine.com - Prisons Warp the Vote

http://www.tompaine.com/articles/2008/01/08/prisons_warp_the_vote.php
Prisons Warp the Vote
Brett Blank, TomPaine.com
The Census Bureau counts people in prison where their bodies are located on census day, not where they come from and where they will return, on average, 34 months later.
Forty-eight states bar prisoners from voting, and most states have constitutional clauses or election law statutes which explicitly declare that prisoner remains legal residents of their home addresses. When states draw districts based on the Census Bureau's padded counts of prison locales, they give those districts extra representation just because the prison industry has a facility there...SOURCE