@blablarg18 said:

In 1 poll, 20% of USA Dems -admitted to pollster- (so, > 20% in reality)...... that in USA 2020 election, they personally, had voted duplicate or other illegal ballots mailed to them.

That's just ridiculous - I saw a poll where 93% of MAGA supporters admitted to masturbating to AI generated images of DJT. (95% of males!)

I can't speak to CA elections, but in the 3 states I've lived in in the past 10 years, you can FILE your registration to vote by mail, but at some point BEFORE the election, you have to show up and prove citizenship. And in all cases, vote-by-mail does't stop when a potential ballot is received by mail - it has to undergo validation of the voter, their registration status (where they proved citizenship) and the fact that they only voted once.

NOTE: There is no requirement in the 3 states I've worked in that you have to PROVE a residential address - homeless people can vote too!

All of that said, what you've REALLY proven is that cheaters get caught.

I've said it before - all of these "elections are easily manipulated" claims are based on one false assumption: that voting in the US is managed the same as your high school homecoming queen elections. And that is TOTALLY false.

I strongly encourage YOU to try to vote twice in the nest election come NOV - see how YOUR Supervisor of Elections prevents it from happening.