I'm guessing but if I wanted to catch dems cheating the vote, I'd position cameras outside and count the number of citizens who went into vote and see if that number is close to the number dems are reporting. Democrats don't vote the dead on purpose - it's a byproduct of the fact that the dead don't show up to vote. Also, cheating is usually done in black precincts... in swing states.
James O'Keefe or the FBI- the part NOT run by the Southern Poverty Communist Center could easily do this...
There should be cameras in and out at polling places all accessible from the web. The cameras should remain accessible until the ballot boxes are sealed. That would greatly reduce voter fraud.