There are background interviews with persons acquainted with the personal circumstances of the accused to build up provable motives. Large fraud trials such as the Bernie Madoff giant Ponzi scheme took years to bring to trial and consumed huge resources of large Federal agencies such as the SEC and FBI. In the case of proving election fraud to a level that courts or legislatures will take the extreme step of ruling an election invalid and awarding a state’s electors to the opponent alleging the fraud, those are history making decisions that require more than just circumstantial evidence and the proving of it must be done in days and weeks because the Constitution requires that a new President be inaugurated on January 20th after the election. It is a tall order no matter how widespread fraud might appear to be.