While national Democratic leaders have been busy pummeling President Bush, New York's senior senator, Charles E. Schumer, a Democrat, spent part of a campaign debate on Sunday aligning himself with the president, saying he voted with Mr. Bush "to extend the child income tax credit,'' and that he "voted with the president for authorization to go into Iraq." With those comments, Mr. Schumer underscored a strategic reality as he seeks re-election: He is not just content to win a second term in the United States Senate, but he is looking to win big. And to do that, he must attract...