Barack Obama campaign manager David Plouffe sent a new memo out to superdelegates today urging them to make their decision now, and support Barack Obama.

“With the Clinton path to the nomination getting even narrower, we expect new and wildly creative scenarios to emerge in the coming days. While those scenarios may be entertaining, they are not legitimate and will not be considered legitimate by this campaign or its millions of supporters, volunteers, and donors,” Plouffe wrote.

He correctly pointed out that the Clinton campaign keeps creating an alternative reality, “The Clinton campaign was very clear about their own strategy until the numbers become too ominous for them. They were like a broken record , repeating ad nauseum that this nomination race is about delegates. Now, the word delegate has disappeared from their vocabulary, in an attempt to change the rules and create an alternative reality.”

Plouffe urged superdelegates to move from the theoretical and into reality, “At some point – we would argue that time is now – this ceases to be a theoretical exercise about how superdelegates view electability. The reality of the preferences in the last several weeks offer a clear guide of how strongly superdelegates feel Senator Obama will perform in November, both in building a winning campaign for the presidency as well as providing the best electoral climate across the country for all Democratic candidates.”

Plouffe concluded by reminding superdelegates about the rules they made, “Senator Obama, our campaign and our supporters believe pledged delegates is the most legitimate metric for determining how this race has unfolded. It is simply the ratification of the DNC rules – your rules – which we built this campaign and our strategy around.”

I think this is the final push to get Obama over the top. The Obama campaign now has the results on their side. I suspect that we won’t see a flood of superdelegates, but probably an increased flow towards Obama in the coming weeks.

The endorsements had already dried up for Clinton weeks ago, so I think many superdelegates are content to wait until after June 3 to make Obama the official nominee.

Full Plouffe Memo:

http://my.barackobama.com/page/community/post/samgrahamfelsen/gGCNJj