Donald Trump recently made the recommendation for people to vote twice in the election: once through mail-in voting and once through in-person voting at a polling station: https://www.nbcnews.com/politics/2020-election/trump-encourages-north-carolina-residents-vote-twice-test-mail-system-n1239140
The article states it is illegal to vote more than once in an election. However, I thought I read somewhere that if you did what Trump proposed, they'd just have your in-person vote override your mail-in vote, as in they'd ignore your mail-in vote during the counting.
Is voting as described above by Trump illegal?