Marc Ambinder crunches some delegate numbers and comes up with an interesting scenario in which Obama and Clinton could tie in the delegate count:
There are a couple of small problems with Ambinder’s math. First, adding 1,976 and 1,976 does not equal the total number of delegates (4,047). That’s because about a hundred of the “Delegates already decided” in his calculation have not been allocated to Obama’s or Clinton’s column. All of the delegate scorecards are still a little hazy on the exact numbers. Second, Forbes‘s delegate calculator–like Slate‘s–incorrectly assumes that all delegates are allocated proportionally according to the statewide vote. Nevertheless, Ambinder’s “scenario Gertrude” shows just how close the delegate count could be. If Obama is leading Clinton by less than 100 delegates after the last day of voting on June 7, this race will almost certainly head to the convention.