Obama wins Iowa's Democratic caucus: NBC

DES MOINES, Iowa (Reuters) - Sen. Barack Obama won the Iowa Democratic caucus on Thursday, dealing a setback to national front-runner Hillary Clinton in the first nominating contest of the 2008 U.S. presidential election, NBC News reported.

The Iowa victory buoyed Obama, a first-term Illinois senator trying to become the first black U.S. president, and gave him momentum as he headed into the January 8 primary vote in New Hampshire, where polls showed him in a tight race with the former first lady.