In the US, there's no evidence that this happens - just a bunch of media narratives and failed lawsuits after the 2020 election that couldn't provide an ounce of proof when push came to shove.
Eh, there's voter fraud in the US. Some of it is very ironic too [1].
> He voted by absentee ballot and again in person on election day but claimed in social media posts that he did it to show how insecure absentee voting is. He pleaded guilty to one of the charges and was sentenced to 6 months of probation and ordered to complete 40 hours of community service and pay $500 in restitution. [1] [2]
However, I didn't see any cases for 10+ votes as a deceased person for 2020. There is somebody that voted 26 times using alive people though [3].
The overall moral is though, there is fraud and it does get caught. When you think there's "widespread" fraud that isn't being detected it ends up always being a simple explanation (i.e. people lived in the state at the time of the election and moved afterwards).
