I don't live in the USA but my Mum is from Pennsylvania so in a slightly weird twist of luck I do get a vote there.
If you're anything like me, especially if you have a connection to a particularly critical state, I encourage you to register and request your ballot.
Vote from Abroad: Request Absentee Ballots for US Citizens
US Citizens living abroad can request absentee ballots easily. Start your ballot request or find your state’s voting rules here.
(www.votefromabroad.org)
Thanks to the excellent work of volunteers from Democrats Abroad calling from around the world and reminding me, I have just done so. Please, join in if you can.