Oprah Winfrey
Winfrey had also emerged as a political force in the 2008 presidential race , with her endorsement of Barack Obama estimated to have been worth about one million votes during the 2008 Democratic primaries . In 2013 , Winfrey was awarded the Presidential Medal of Freedom by President Obama and honorary doctorate degrees from Duke and Harvard . In 2008 , she formed her own network , the Oprah Winfrey Network ( OWN ) . 
<triplet> 2008 Democratic primaries <subj> 2008 <obj> point in time <subj> 2008 <obj> point in time