Best to remind them to follow the will of the voters of their states and vote accordingly and to ignore outside pressure. If any GOP electors can’t take the pressure and are waivering, they should resign now so the party can appoint a more faithful elector!!
If they are threatened they need to report the threat to law enforcement and also their state party to ensure the prep is brought up on charges!
Their contact info including address is apparently made public. How are they going to know who the “perp” is? I say nip it in the bud and offer security to any one of them who has been threatened. It shouldn’t be difficult to raise the funding for such a thing with a national appeal.