Can confirm that this is Democrats Abroad. If you signed up as a member to get your ballot, They will call you close to the election to kindly remind you to vote early and such.
Came up as international number since I'm in UK. I must have signed up for something as they knew my name and my email as well. Asked me if I'd voted yet.
This number called a few times and when I searched it, I found it in my contacts where I registered with Democrats Abroad some months ago. It's harmless, They just want people to vote.
This time she left a message. It was someone from Democrats Abroad calling to make sure I'd sent in my overseas ballot request.... So, Safe, But still unwanted, As I don't want to accept international calls on my local cell phone.