You can't "rig" this kind of machine.
I and others have already pointed out at great length that we aren't discussing the computerized Diebold machines you're thinking of. These are optical counters, without a central database, and used locally.
All the votes have paper ballots connected with them. All of them.
This is like the barium thing. You and the others out there pushing this have no idea what you're talking about.
And the fact remains that there is a much longer and proven history in this country of people rigging hand-counted elections than electronic ones.