

Martial law lets you arrest people without trial, but it doesn’t directly allow you to just not hold an election, and you can only declare it “unless when in cases of rebellion or invasion the public safety may require it”.
I guess you could come up with some pretence then impose martial law and make it clear that anyone voting the wrong way is going to get arrested, but at that point why bother with laws at all?
IIRC Ubiquity make a line of point-to-point ethernet bridges that operate in the 20GHz range (because more bandwidth, and if you have line of sight you don’t care about interference as much). Responsible vendors won’t even sell you one without sighting a license cos they can also get in trouble for selling it to you if it turns out you are operating it illegally