Mathew: I agree online polling is more accurate than going to a place where human interaction is required. I wonder if online polling can be tampered...

Mathew: I agree online polling is more accurate than going to a place where human interaction is required. I wonder if online polling can be tampered with? During this presidential election, candidates had claimed that the voting process was hacked or rigged. Regardless of which samples we take into account, what is the validity of voting and how much margin error is acceptable on a large scale?