No single decisive primary

After Indiana and North Carolina, there will be only six primaries left for the Democratic nomination battle.

All are important, but none will be decisive.

The six contests line up in predictable fashion: Clinton should easily win West Virginia on May 13, Kentucky on May 20 and Puerto Rico on June 1.

Obama is heavily favored in Oregon on May 20, and Montana and South Dakota on June 3.

As a result, the final contests will have little effect on the delegate count.

The real answer, as the Washington Post's Dan Balz suggested, lies in Michigan and Florida,

The two states, both of which favor Clinton, were deprived of their representation at the Democratic National Convention in August because they moved up their primary date without approval from the Democratic National Committee.

But the issue remains unresolved, and Clinton continues to press for a solution that would give her a boost in the delegate count.

The most important date on the calendar could be May 31, when the Democratic National Committee's Rules and Bylaws Committee meets to consider the matter.