Where's my sticker?

Yesterday was election day. I did my research. I went into the polling place as an educated voter. I marked all the little bubbles and fed my sheet into the machine. I looked everywhere for the person passing out the "I Voted" stickers, but they weren't there. Actually, I didn't see anyone all day wearing a "I Voted" sticker. Personally, I love the reward...and am sad there were no stickers. Does Massachusetts not believe in "I Voted" stickers?