I think the best way to prevent vote fraud is to get local law enforcement/state police involved. This is very relevant to those of us supporting candidates who are pro-securing the border. In the least, the central vote tabulating facility in each state should have law enforcement monitoring, both inside and outside. Anyone entering should be required to show their i.d. as well as to state their official business.

Separately, I heard that Rep. Russ Holt is introducing legislation that would make it easier for states to audit election results.

Separ