The following article points out why/how politician's partisan pandering causes flip flopping their positions:

http://www.commentarymagazine.com/20...%0Ancy-pelosi/

Hence no credibility.

I think the last paragraph is significant as it points out the destructive nature of rigid partisan yard sticks. Especially the following statement in that paragraph:

"It underscores the degree to which partisanship can ravage people’s fair-mindedness and, in the process, make them look like fools and hacks."

This partisan obsession and the desperate need to measure everything against an R or a D yardstick has over taken the disgusting, linguine spined, hollow, don't do what is right...political correctness!!

Nothing is sacred in politics...except re-election.

btk