ABC News' David Chalian Reports: There are 189 pledged delegates up for grabs in the remaining five contests (Kentucky, Oregon, Montana, South Dakota, and Puerto Rico).
There are 239 unpledged (super) delegates that are thus far uncommitted/undeclared according to the ABC News delegate estimate.
Sen. Barack Obama, D-Ill., is 140 delegates shy of the magic 2,025 number to secure the Democratic nomination. (That means he needs roughly one-third of the remaining delegates at stake to get the nomination.)
Sen. Hillary Clinton, D-N.Y., needs 74% of the remaining delegates at stake to capture the nomination with 2,025 delegates.
At this writing ABC News has allocated all 28 delegates at stake in West Virginia. Twenty (20) delegates have been allocated to Hillary Clinton and 8 delegates to Barack Obama. Sen. Clinton net gained 12 delegates for the night.
Compare that net gain to Barack Obama's 27 superdelegate net gain since last week's North Carolina and Indiana primaries and it shows you just how difficult the current political terrain is for Sen. Clinton.
Sen. Clinton ended up netting approximately 147,410 popular votes to her national popular vote total. (She was roughly 700,000+ votes behind Obama heading into this evening, so she is currently 579,643 votes behind Obama in the national popular vote in all nominating contests thus far -- not counting Michigan and Florida.)
The Clinton campaign will likely argue that they have regained the lead in the national popular vote because they like to include Florida and Michigan in their popular vote count, despite the fact that those contests did not count toward the nomination.