Given my Theory of Everything, you will note the two popular explanations for John McCain becoming the depraved hack he has so clearly become.
His supporters, generally conservative, believe that a reasonable and sane John McCain is being led astray by outside forces, i.e., the Rovians he has hired to get him to the White House.
His detractors, generally liberal, believe he is suffering a personal moral failure.
Also, please note: I have created a "Theory of Everything" category. Look forward to more of these posts. Look forward with joy!