New details that emerged yesterday about William F. Weld's tenure at a small Kentucky college, which collapsed in a financial scandal two months ago, threatened to push the issue closer to the forefront of his campaign for governor of New York. Several of his opponents, Republicans and Democrats alike, seized on the revelations to either raise questions about Mr. Weld's managerial competence or warn that the federal investigation of possible student loan fraud at the school, Decker College, would hobble his chances of winning the Republican nomination in 2006. "If Bill Weld becomes the nominee, he will be on the...