“According to our delegate calculator, two 10-point wins in Ohio and Texas would inflate her margin-of-victory target to 20 points, which will be a hard margin to achieve once Obama visits Pennsylvania and North Carolina (the two richest states remaining, delegate-wise).”

The calculator gives a quick look at how the remaining 16 primary results, from Ohio to Puerto Rico, can affect the Democratic nomination. The calculator doesn’t incorporate superdelegates, but, as Slate editors point out, “we’ve simply noted at the bottom of the calculator how many superdelegates the leading candidate needs to win the nomination in a given scenario.”

So go make some calculations, but beware:  As of posting time, CNN is projecting victory in Vermont for Sen. Barack Obama.