The 2010 election cycle will get going soon, so I thought I’d ask again a question I posed seven years ago: What is Buys-Ballot’s Law, and what penalties are there for violating it? The first person to answer this in the comments from memory will be publicly acknowledged as getting the special Volokh Conspiracy Profound Knowledge Award. (You may use reference sources to confirm and make more precise your existing memory, but not to look the term up in the first place.)
UPDATE: The award goes to Martinned!