Richardson: Obama's speech "clinched" it

More evidence that Obama's speech on race was a game changer:

Sen. Barack Obama's speech on race was a decisive factor in Bill Richardson's endorsement of his presidential bid, the New Mexico governor revealed Saturday.

"I think what kind of clinched it for me, although I made a decision a week ago, was Sen. Obama's speech on race," Richardson said on ABC's "Good Morning America."

"He had this problem with his pastor. He could have said nothing or glided through it. Instead, he attacked the race issue head-on, talking about stereotypes, taking some very, very tough stances on this issue."

I have a feeling that other superdelegates will follow.  This may have been the week that the pundits will single out a few months from now during the postmortem on when the Democratic primary race finally ended.