This morning at RealClearPolitics John McIntyre writes a provocative but reasonable piece that suggests that one should (in Wall Street terms) "buy Hillary" (he should have written "go long Hillary and short Obama."). He writes:

The mostly unnoticed switch of Puerto Rico from a caucus on June 7 to a primary on June 1, gives Hillary Clinton a very real opportunity to surpass Barack Obama in the popular vote count. If Senator Clinton can "win" the popular vote, this will provide undecided superdelegates ample rationale to go with the less risky general election option of Senator Clinton.

If that is correct, that is important. Having a slight but indecisive delegate lead becomes a mere argument if the opponent has a lead in the popular vote, which becomes simply another argument -- but, when the issue is clouded, the one with the ostentatiously racist minister has a distinct disadvantage in the argument.