Senator Hillary Rodham Clinton asserted yesterday that the Bush administration’s failings in foreign and domestic policy were so great that Republican and independent voters would help Democrats win control of Congress in the Nov. 7 elections.Mrs. Clinton also endorsed the Democratic candidate for attorney general, Andrew M. Cuomo, and took a jab at his opponent and her own onetime rival Jeanine F. Pirro. Mr. Cuomo and Ms. Pirro continued battling in the intermission between their debates Sunday and today. Mrs. Clinton, speaking to several hundred women at the fall lunch of the Eleanor Roosevelt Legacy Committee at a Midtown hotel,...