Jay Valentine makes a strong case that ballots should not be mailed out to addresses for which mail cannot be delivered (vacant lots), at which voters cannot reside (commercial or industrial addresses), or where mail cannot be accurately delivered (apartment or dorm buildings with no apartment number or dorm room number.) He recommends purifying voter rolls so that ballots will not be mailed out to addresses where mail cannot be delivered or voters cannot live. This can be done by compiling the Undeliverable Ballot Database (UBD).To support his argument, Valentine quotes a message from a retired mailman who said that...