Okay. I will try one more time
Let us say there are 2 people. Person A and person B. They are registered in different polling places. Now, lets say person B for whatever doesn’t vote. What is to stop person A from going to his own polling place, vote and then going to person B’s polling place and lie and say he was person B and then vote again? Without requiring IDs, what is to stop that? How would person A get caught?
As I’ve already said… nothing.
If person-A knew person-B’s name, knew with certainty that they were not going to vote, knew at what polling station they were registered to vote, knew what their voting intentions were and knew that person-B was not known to the officials at the polling station (not unlikely in my experience)… then yeah they could commit the perfect crime and nobody would know.
How is that one person-A going to swing an election unless they’ve got all that info on more than person-b?