Well, If you read the papers, as of today Obama needs only 70 more Superdelagetes, where as Clinton needs over 200. So the outlook is good for Obama. Of course, some extremely unexpected things can happen in politics.
Now, if you meant "Will Barrack Obama beat John McCain in the presidential election?" that will be quite hard to know. It really all depends on Clintons Delagates (If she loses) and whether they will be scornful towards Obama or listen to Clinton and support him. Either way, it's suspensful, and all we can do now is hope and follow the election. Unless you live in Peurto Rico, Kentucky or Montana ( I think), in which case you can vote.