Tyler Durden had multiple Fight Clubs, all of whom were completely loyal, anonymous, and committed to operational security. That's why I said he'd be the only one able to do it.
For real people, the more people you add for operations, the more you have to add for security and cleanup. Beyond a certain point, you just can't keep everybody quiet without extreme measures, which are themselves likely to be noticed.
Secret conspiracies have to be small, otherwise someone eventually gets disgruntled or has an attack of conscience and spills the beans.
Even large, public conspiracies, like the classified documents protection system, eventually develop leaks, and it is already really expensive to operate before accounting for cleanup up after spies or whistleblowers.
So if we ever reach the point where five people or less could remotely rig the vote for every county in Florida, I have to not only assume that it is being done every election, but also that multiple groups may be stepping on each other's toes while doing it. Previously, the traditional ways of rigging the vote are right out in the open. You get people likely to vote against you stricken from the voter register. You enter fake ballots in the name of someone not likely to vote, such as the recently deceased. You sabotage polling places in urban areas such that voter throughput is reduced, and lines grow around the block. You get local cops out on the streets, giving out traffic citations to selected people that may be on their way to vote. I have even seen sudden construction activity on election day obstructing the sole entrance to a polling place.
Those are nasty, but at least people can seek redress for the misbehavior that they can see.