I believe it's the Ends Justifying the Means argument. The justifcaation is in their belief anything is okay as long as they can regain power and set the USA back on a leftist course. IMHO. We see it and say You should be ashamed. They look at it and say Winning is the only thing that matters.
That is what they think now because they are crazed by being in the Minority. Then, when they do not achieve the Majority status in the next two cycles they will wring their hands and try to search what ever is left of their souls, and maybe they will start looking in the mirror and see what we see, aged,broken down,seriously flawed,liars who did not have the courage to do the right thing like Zell Miller.