I must admit to not paying much attention to the details of his campaigns but the fact that he beat the twin evil warmongers of both John McCain and Hilary Clinton in 2008 is something I will always give him credit for.
Then he got a nobel peace prize and went on to become the first POTUS in history to spend every day of his eight year term at war, bombing more countries than George Bush in the process.
Still, could have been worse. It could have been Clinton or McCain.