The First Ledes

AP:

Sen. Barack Obama of Illinois sealed the Democratic presidential nomination Tuesday, a historic step toward his once-improbable goal of becoming the nation's first black president. A defeated Hillary Rodham Clinton maneuvered for the vice presidential spot on his fall ticket.

The New York Times:

Senator Barack Obama is poised to clinch the Democratic presidential nomination on Tuesday night as he received support from a steady stream of prominent party officials, signaling that the grueling primary battle with Senator Hillary Rodham Clinton is coming to a close.