Here are some reasons I gave to choose Obama.
Consider that as the economic crisis worsens, as all the experts predict, a global economic response will emerge. A USA with the weakened, diminished stature the Bush/Cheney/Rice administration has produced will be far less effective and influential than a strong Obama administration embraced by the world.
Effective Leadership: One undecided white male, about 50 years old, said that if you were filling a CEO job at Coca Cola, there are hundreds of people with comparable CEO experience from other Fortune 500 firms, but not for the job of president. Funny thing is, running for president has some similarities. Each candidate must engage in raising hundreds of millions in funding, hire managers, select advisers, build a team of thousands or even tens of thousands, develop marketing, media and technology strategies, build strategic alliances. It's pretty well agreed Obama has done a brilliant, perhaps historic job building his campaign. McCain's campaign is also historic-- as a mocked laughable, buffoonery, lacking principle, strong leadership or vision.
Then there's McCain's relationship to technology, or lack of it. You don't need to be an IT expert, but you should at least have a handle on the technologies that are changing the world. Failure to be able to navigate even the simplest uses of computers indicates a lack of curiosity, a dependence upon others that keep McCain in the dark, so he really can't full grasp the full power and potential of technology. We need a leader who at least gets the technology enough so he can see its potential so he can ask for the next level of performance.
Finally, look at the man himself. Consider the performance in the debates. Obama was steady, calm, with all his facts at hand. McCain was literally doddering, unsteady, depending upon shallow talking points, not drawing upon a reservoir of knowledge and wisdom. Obama stayed with issues, McCain went on the attack. We need a grownup who can remain steady while facing the crises he will inherit from Bush.
You may not know Obama as well as you like, but in the last two years, you've had a chance to see him operate. You've probably received emails or DVDs or seen attacks on him. But if you go with your observations of how he's handled himself, what's he's actually said and done, I think you'll have to conclude he comes up looking to be the better man. And that's what America needs today.