I had a choice between Hillary on Stephanopolis' ABC and Barack on Tim Russert's Meet the Press. I decided to watch Obama, 'cause he promised to be more interesting than Hillary. Russert gave Obama 50 good minutes of TV exposure without every asking Obama to say anything of substance. Russert spend some 15 minutes with Obama rehashing the Jeremiah Wright disaster. This didn't tell me anything I don't know. Jeremiah is not a bullfrog, he is a toad, who has hurt Obama, no one knows how badly, but badly enough.
For the rest of the time Obama was extraordinarily evasive. Lots of smooth, good sounding answers that don't mean anything. For instance Russert asked Obama where he stood on nuclear power. Obama said he was in favor, after safety problems and nuclear waste problems had been properly studied. What does that mean? Would an Obama administration grant construction permits and operating licenses or would they demand lengthy "studies"? Who knows?
Obama still pledges to pull US troops out of Iraq, but he might take 16 months to bring them all home. If a genocidal disaster threatened then he might change his plans, somehow. He promised to support Israel against Iranian nuclear attack by preventing the Iranians from obtaining the bomb. He failed to explain how he planned to work that miracle.
In short, the policies of an Obama administration might be anything.