If there are enough double votes that throwing them all out changes the election. Then yes, do-over. The possibility of that happening is basically non-existent

If there are enough double votes that throwing them all out changes the election. Then yes, do-over. The possibility of that happening is basically non-existent though because it would require a coordinated attack by thousands of people to change a national election (even assuming they strategically attack swing states). There's a virtually zero chance that a group effort involving thousands of people isn't uncovered before the attack happens.