Man, I wish I had seen your post a couple of weeks ago. A month before election day, I had a couple of ads on craigslist asking for future campaign signs, and kept them current through election and afterwards. I really needed some signs, so I ended up buying 3, 4x8 sheets to finish my utility trailer...
I scored some cut up signs the day after elections. Because they had been slashed and cut in pieces, I knew I wasn't braking any law or taking someones personal property by taking the better pieces home. About 5 4x4 sheets worth. Not all usable. So, currently, with those smaller sheets, I'd say I have enough to not "NEED" more. But when I do, I know who to contact!
Thanks for offering to give them to people who need them! That's very nice of you!