As I understand from the governor's commission which looked into irregularities in 2004, the electronic voting machines in PA have no paper trail because it is not needed-- since all the machines are certified by the commission as safe and tamper proof.  In fact , according to the commission, the paper trail is considered a waste of money.  In other words the governor of PA through his commission says, "trust me--I vouch that these machines are OK."  and I guess that is supposed to be the end of it.   Unless someone in the press says that this is not a good enough answer and prods- the politicians.  Please investigate PA also.