Neither Obama nor McCain can raise your taxes; that's Congress's job.
Regardless of who is president, the country's in a serious economic mess, and everyone is going to have to tighter their belts. You can be sure, though, that the more influence the Republicans have, the less the rich will pay--and consequently, the more it will hurt the poor and middle class. It sounds like you're not rich, so you should fear McCain more than you fear Obama.
But that's politics--and a question for your congressman/woman. This is an investment forum. :-/