America has had a black president. Is the country ready for a black president who is also a woman? Speculation about the candidacy of Oprah Winfrey makes clear that some voters think so. Granted, Winfrey says she won’t run, but friends, commentators and many in the Twitterverse are pushing for her to reconsider. As a scholar of race and politics, I’m curious about whether Oprah will change her mind about running — and even more curious about whether she could win. Occupying a unique space A paper I recently published with Harwood McClerking and Ray Block tried to shed light on this question by examining Oprah’s first major foray into politics — her endorsement of Democratic candidate Barack Obama during the 2008 presidential election.