Buffett, describing himself as "an old hippie" and "Southern radical," says now, "I'm an Obama person."

"Everybody knows my politics [he campaigned for Jimmy Carter and Al Gore and has played twice at Bill Clinton birthday parties]. But half my audience is Republicans — and that's OK. People should be communicating, which is the biggest factor to me."

He has been opposed to the war in Iraq since the beginning. "Anybody who makes policy in this country oughta have to walk by the Vietnam memorial on the way to work," Buffett says.

So why not vote for Vietnam vet John McCain? "I respect John McCain, but it's old stuff. John McCain is older than I am!"