How will they be given out? Like on screen?
I have a chat bot that will allow you to enter by entering a command in chat (Such as !raffle or !enter). The bot will advertise in chat and I'll announce it on stream.
The winner(s) will be selected at random from all entrants. The winner(s) will PM myself or a mod in chat, this will be specified in real time, with their iTunes email and we will send them a key.
There will be multiple raffles throughout the day. Will be giving out codes every ~30 minutes during the stream.