As the presidential campaign races to a finish, I suspect a factor that will play a key role in the outcome is not only how voters perceive the presidential nominees but also how they perceive Sarah Palin, Republican John McCain's VP running mate. I suspect, for several reasons, including her appeal to voters she dubs "Joe Six Pack" and her willingness to sling unwarranted mud, Palin may sway many who might otherwise have pulled the lever for McCain to consider the Democratic alternative, Barack...