ABC News: Obama takes the lead in superdelegates

The exact number depends on how you count, but it's clear that Obama has essentially erased Clinton's lead in superdelegates (ABC News):

Sen. Barack Obama moved into the lead today in the last category that Sen. Hillary Clinton had claimed to have an edge — support among the Democratic Party's superdelegates.

The Illinois Democrat grabbed the superdelegate lead thanks to a switch by New Jersey Rep. Donald Payne and an endorsement from previously uncommitted Rep. Peter DeFazio of Oregon.

Those two votes gave Obama a 267–266 lead over Clinton. That is a huge shift since the days when Clinton boasted about a 60-plus vote lead among the party's pros back on Super Tuesday.

And Obama's lead will only get wider.