What is the Polls tab for?

I noticed that Profile pages now have a "Polls" tab at the end.

From what I've seen, the "Polls" tab shows discussions started by that person. 

If "Polls" just repeats the items under "Newest Topics," why have it?

If it's going to have some other function, what will that be? 

Can anyone on the CommunityTeam​ explain?