Confused by the conflicting claims over the current and future status of the cumulative popular vote in the Democratic presidential contest? Take a look at Steve Kornacki's methodical deconstruction of the issue in the New York Observer.

Fair warning: Kornacki's account is framed in a way that expresses considerable hostility to the Clinton's campaign's arguments. But his math is solid, and does fairly explain the various methods of counting this or that state in or out.