Quoted from btw75:unfortunately folks - check with your tax pro, but I'm under the belief that raffle tickets are specifically non-deductible. Please don't let that stop you!
I was under that same impression. If you receive something of value in return, then its not deductible. Unless you're certain of it I would just leave it off, to me the miniscule amount your going to get back on a $50 write off is not worth the potential audit hassle.
Either way, great cause to support here and the raffle just makes giving that much more fun. Carry on.