If you’re going to do that, first loudly ... for ALL to hear ... state “THIS MACHINE KEEPS CHANGING MY TRUMP VOTE TO HARRIS”. Make sure everybody in sight or hearing knows WHY you’re rendering the machine unusable. And document it, as this fellow did.
Absolutely. And make an effort to correct the problem. The when arrested tell the police the damaged machine is evidence and cannot be repaired as it is my defense of justification.