Tough call since I don't want any of the three!
I don't know who is worse between McCAin and Hillery, but I do know, Obama is worse than the other two put together, and I think he would be impossible to beat.
His supporters will not listen and will not care what his record is, or what he stands for. We will be accused of being racists and bigots and accused of hate speech. We won't be able to say a word against him!
MHO