THIS IS rich. I hope Joe Biden ends one of his answers with, “congressman,” because he isn’t bound by this nonsense. Its for the moderator Martha Raddatz.

From Maggie Haberman:

When Paul Ryan and Joe Biden take the debate stage tonight in Danville, Ky., the form of address the debate moderator is supposed to use with the VP’s opponent is “mister” instead of “congressman,” two sources confirmed to POLITICO.

The form of address is part of the detailed memorandum of understanding between the two camps, according to the sources familiar with the document. Such MOUs detail specifics ranging from how footage of the debates can be used to podium placement, and so forth.

Go. Joe.