(CNN) — Former Bush Secretary of State Colin Powell said Monday that he has not yet decided which candidate to back in this year’s presidential race. The election of an African-American president “would be electrifying,” Powell told a George Washington University audience, “but at the same time [I have to] make a judgment here on which would be best for America. “I have been watching both individuals, I know them both extremely well, and I have not decided who I am going to vote for. And I'm interested to see what the debates are going to be like because we...