I see stories about how election is rigged or that there are security vulnerabilities and lots of people don’t believe the outcome. Why don’t they just open source everything so that anyone can look at the code and be sure the votes are tallied correctly?
Because there is too much money to be made in the business. Vendors are selected through a political process which is decided by what politicians benefit from the selection.
Don’t kid yourself - the people screaming about rigged elections don’t actually care about solving the problem. They know they lost and they are happy for the excuse to continue grandstanding.