Democrats telling their base to vote by mail then when the election comes around, either riots, second wave covid lockdown, or some other reason to suppress votes for Trump on election day.
At this point, I'm willing to consider that they would orchestrate some man made natural disaster to hurt Trump.
Funny thing is the numbers say GOP tends to vote more by mail and Ds more in person
Sending a ballot to every registered voter, whether solicited or not, is ripe for fraud