5 Republicans Who Have Endorsed Barack Obama

The list of Obama-cans grows with recent endorsements from conservatives.

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1. Ken Adelman, policy analyst and former official in Ronald Reagan's administration

2. Colin Powell, former secretary of state under George W. Bush

3. Christopher Buckley, author and columnist for the National Review

4. Lilibet Hagel, wife of GOP Sen. Chuck Hagel

5. Michael Smerconish, talk radio host

Sources: Washington Post (Adelman, Hagel), U.S. News, Fox News, ABC News