Best summation I've read on how W. and the Republican Congressional looters will retain their majority:

If you can remain the party of victory when your policies lead to defeat, if you can remain the party of fiscal restraint when you run up staggering deficits, if you can remain the party of moral rectitude when your leadership is mired in corruption and has indelibly stained the country's honor, then certainly you ought to be able to retain control of the government when your approval rating is under 30%. Hell, if you can do all that you ought to be able to fly to Mars on a hang glider.