Former labor secretary (during the Clinton administration) Robert Reich just formally announced his support for Obama:
Although Hillary Clinton has offered solid and sensible policy proposals, Obama's strike me as even more so. His plans for reforming Social Security and health care have a better chance of succeeding. His approaches to the housing crisis and the failures of our financial markets are sounder than hers. His ideas for improving our public schools and confronting the problems of poverty and inequality are more coherent and compelling. He has put forward the more enlightened foreign policy and the more thoughtful plan for controlling global warming.
He also presents the best chance of creating a new politics in which citizens become active participants rather than cynical spectators. He has energized many who had given up on politics. He has engaged young people to an extent not seen in decades. He has spoken about the most difficult problems our society faces, such as race, without spinning or simplifying. He has rightly identified the armies of lawyers and lobbyists that have commandeered our democracy, and pointed the way toward taking it back.