A weakened Edwards will carry on

'Stay with us in this fight,' he urges, heading into tough battles in N.H., S.C

DES MOINES, IOWA (The News & Observer) - Former North Carolina Sen. John Edwards' run for the White House hung in the balance Thursday as he finished second in the crucial Iowa caucuses.

Edwards vowed to continue his quest for the Democratic presidential nomination, saying Iowa voters provided a mandate for change.