Confidence in the U.S. system of government has dropped to a new low in more than 35 years, with public attitudes burdened by continued economic discontent, soaring gasoline prices, record opposition to the war in Afghanistan -- and a letdown in hopes for political progress after a bout of bipartisanship last fall. More Video Watch: GOP's First Presidential Test Watch: Not Everyone Approves of the President Watch: Obama Rising, Palin SinkingOnly 26 percent of Americans in a new ABC News/Washington Post poll say they're optimistic about "our system of government and how well it works," down 7 points since October...