June 4, 2004 Store for Designer Clothing Displays Political LeaningsBy RUTH LA FERLA iz Ehrlich stood transfixed at the window of the Marc by Marc Jacobs store on Bleecker Street on Wednesday. Instead of a tableau of flirty spring dresses and chic round-toed pumps, it displayed a 2-foot-by-3-foot cardboard ace of spades with the image of President Bush.Beneath that was a caption with the words, "I'm the commander - see, I don't need to explain - I do not need to explain why I say things. That's the interesting thing about being the president." The longer she stared, the more...