In a rousing speech that has become the hallmark of his march from obscurity to the Democratic Presidential nomination, Sen. Barack Obama of Illinois accepted the challenge of becoming his party’s presumptive nominee and detailed the change that he has promised to bring to the political process.
It was a historic moment in American politics and the nation’s history and even Hillary Rodham Clinton’s refusal to be gracious and admit defeat could not destroy the significance of the evening.
Senator Frank R. Lautenberg of New Jersey easily swatted away his challenger in the Democratic primary on Tuesday and will seek his fifth term in the Senate in November.
Senator Robert C. Byrd, left, was taken to a hospital Monday evening and will be treated there for a mild infection for several more days, his office said. Mr. Byrd, 90, a West Virginia Democrat who is the longest-serving senator, was hospitalized after feeling lethargic at work. He went home after a 5:30 p.m.