It's still not going to work with the military against him.
By the time of the election, probably even more civil servants, intelligence, etc., will have reached the breaking point with him. "Lone wolves" won't do it.
Imagine this scenario then, and all you need are a handful of people in each urban area of a swing state prepared to make it happen:
Election morning: coded messages are posted on Twitter by fake accounts, and 10 minutes later a handful of poll workers are shot, execution style before the attackers flee, setting fires. More coded messages during the initial attack, and polling locations with long lines are targetted with automatic weapons fire and bombs left in bags and boxes. This is the main attack.
What happens? poll workers are sent home or relocated, polling locations moved to secure sites. Police presence at secure sites. Other polling locations and other parts of the city are left without police protection due to stretched resources.
Throughout the day, more coded messages, harassment attacks such as bathroom fires at polling sites, firebombings of cars parked near polling locations. Shots fired throughout the day but to relatively no affect. Attacks of opportunity. "Something" newsworthy occurs at least hourly.
Late afternoon/evening: coded messages multiply but there are fewer attacks. Delays from civil authorities randomly shutting down locations, rerouting traffic, and securing perimeters. Being November 3rd, it gets dark early.
Evening/overnight: more unrest. This time not by the initial attackers (who have already done their job) but by copycats and others starting fires and looting just for fun. In some cities elections are extended to the following day, with improved security. Nothing else of consequence happens that day as the initial attackers have already left or are lying low, playing X-Box.
Effects: Massive voter suppression in liberal strongholds but conservative areas which are outside of urban areas are left alone. Votes cast after November 3rd are left in legal contention. Conclusions that the Minneapolis attacks were a dry run for the election night violence. Trump is still untouchable because no legal connections can be established. He has won the election due to massive voter suppression bought on by the violence.
