One of the reasons why I became a tax attorney, as opposed to some other kind of attorney, was my realization that--for many Americans--taxation and tax policy would be the most important nexus between the individual and their government. Not everyone is sued, or needs criminal representation, or forms a corporation, but almost all of us pay taxes in one form or another. For that reason it is especially important to consider each candidate's proposed tax policy and understand how it will impact you.
Here are a few links to help you do your own research. Read some of these articles and ask yourself: under which candidate will I pay more taxes? Which candidate's tax policy is more appropriate for the economic circumstances we are currently in?
"Obama and McCain Tax Proposals" from The Washington Post
"Comparison of the McCain and Obama Tax Plans" from TaxProf Blog
"What they'll do to your tax bill" from CNN Money.com