In 1965, California senator George Murphy began keeping sweets in his desk on the Senate floor, and he offered them to colleagues who passed by. Because Murphy sat near a busy entrance, the “candy desk” became well known, and when Murphy left the Senate after one term the tradition was maintained. In the ensuing years Slade Gorton, John McCain, George Voinovich, and Rick Santorum have all sat at the candy desk, each stocking it with confections from his home state. (In Santorum’s case, this was a bonanza — Hershey shipped more than 400 pounds of chocolate each year from its Pennsylvania headquarters.) The seat is currently occupied by Illinois senator Mark Kirk, who stocks it with Wrigley’s gum, Garrett’s popcorn, Tootsie Rolls and Jelly Bellys.

Though by tradition the candy desk is always occupied by a Republican senator, the physical desk that’s used may vary. The current desk was once occupied by Barack Obama.