Question about delegate your SP

Hi Steemians,

After a while I decided to delegate my SP to minnowbooster. I thought I give it a try and let´s see if it works for me.

Now I was wondering, if I vote on someones post myself , does I still have power to vote or because I delegated all my SP , my vote is nothing worth and I will not receive any reward for it?

Thanks for helping me out :)