How I would steal an election

[IDemo]

13. Highly unlikely

Regardless of how cleverly you thought your device was hidden, it must still be connected to data and control buses on the board to interact with the onboard logic and memory. And in the event of an equipment seizure for purposes of inspection, I can guarantee you haven't hidden it away well enough to escape detection by a qualified lab (such as the one I work in).

It is very much more likely that a Man-in-the-middle machine is used to interrupt the communications path between voting machines and central tabulators and perform the manipulations as required. No microchip left in place as evidence after the crime.