Same reasons we have been stating for a very long time..... Obama's bad policy stances.
In the email was a simple YouTube URL, video below entitled "BTW I'm Voting For McCain / Palin."
This young man is a musician and he states loud and clear all the reasons why he is voting for McCain/Palin.
As he states, taxes are not a racial issue. Abortion is not a racial issue. The Second Amendment is not a racial issue...etc....
Here is a related video by the same guy, this one is only 1 minute 11 seconds, much shorter than the one above, but his points are clearly stated as to why he is a Republican.
[Update] as an added bonus just as a FYI, the new AP presidential poll among likely voters, shows Obama's lead down from 8 points to one point. AP usually goes the other way.