Get current user id without access_token for poll app?

It is very limited what you can get when the user didn't install your app. Because getting the uid is the same as getting all public data for the user (you can query all public data with that uid and any access_token of some other user). So, unfortunately, you have to ask for an app install when you want to use Facebook to track if the user has already voted.

There is no way to get that information without the user sharing it with your app by way of accepting/authorizing your app.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.