What analysis has shown that people are not doing this? All I have seen is that there aren't a significant number of convictions, but that doesn't really hold wait if you aren't actually trying to catch/prevent people from doing it. If it never happened, there wouldn't be a standard well known practice of casting a provisional ballot if you have already "voted".
matwood|11 months ago
https://www.npr.org/2024/10/11/nx-s1-5147732/voter-fraud-exp...
https://www.brennancenter.org/our-work/research-reports/reso...
It's another GOP boogie man used to suppress the vote. Personally, I'm a fan of legally mandating everyone vote or pay a fine like in Australia.