Just a warning - if you've entered the ballot but not heard anything, check your email provider, junk box, spam box, whatever else.
I've still not received mine in my personal Thunderbird account but it is in my TalkTalk webmail. Everything else has come through but for some reason this one hasn't. I could have missed out as I rely on TalkTalk forwarding everything and don't tend to go on their website to access my mail.
Go check!