New Jersey U.S. Sen. Frank Lautenberg leads former U.S. Rep. Dick Zimmer, his Republican challenger, 47 - 38 percent in his reelection bid, according to a Quinnipiac University poll released today, but most voters say Sen. Lautenberg is too old to begin another six-year term. Democrats back Lautenberg 80 - 11 percent, while Republicans back Zimmer 79 - 13 percent and independent voters back the Republican 43 - 35 percent, the independent Quinnipiac (KWIN-uh-pe-ack) University poll finds. New Jersey voters approve 46 - 35 percent of the job Lautenberg is doing, his highest disapproval in 12 years of surveys. Democrats...