马里兰大学经济学家克雷格·加斯韦特的一项研究显示，在2008年民主党党内选举阶段，奥普拉的政治捐助为奥巴马带来了约100万张选票。
A study by University of Maryland economist Craig Garthwaite revealed that during the 2008 Democratic Party primary election, Oprah’s political donation helped bring about 1 million votes to Obama.