Robert Novak, in a column on "Obamacons" (Obama-backing Republicans), says he expects a high-profile defection:
Neither Powell, first-term secretary of state for George W. Bush, nor Hagel, retiring after two terms as a U.S. senator from Nebraska, has endorsed Obama. Hagel probably never will. Powell probably will enter Obama's camp at a time of his own choosing. The best bet is that neither of the two, both of whom supported President Bush in 2000 and 2004, will back John McCain in 2008.
Powell praised Obama back in February, saying, "Mr. Obama has done an incredible job . . . He has energized a lot of people in America. He has energized a lot of people around the world." Some have even suggested Obama pick Powell as his VP.