2008 President Barack Obama Chicago Bulls Fan Campaign Pin Button Biden. Here's the story as I know it... I am actually a political items collector myself. I found some of these for sale at one of my favorite vendors at a flea market. We assume these were being "hawked" outside the Bulls games. But there would not have been too many Bulls games before an early November election day. Check out my other listings for a Chicago Bears Pin / Button. Condition is "Used". They have surface scuffs from rubbing on each other from being in a large bag. No marking on it's side. Measures 2 1/8" in diameter. Shipped with USPS First Class.