The "Stack Overflow Constitution" was introduced in Stack Overflow Podcast #88.
A big change to pay close attention to: We’re writing the Stack Overflow Constitution, and we’re asking you, our listeners, to vote on the various elements of this new pivotal document.
Each week, a new amendment is proposed, listeners are asked to comment and vote on them via Twitter (#StackOverflowPodcast), and a winning answer is chosen.
There hasn't previously been a list of all the constitutional amendments and the winning responses, but there is now. The wiki post below can be updated as new amendments are added.