Wisconsin Governor Jim Doyle backed by State Senator Dan Blue and State Rep. Ty Harrell spoke to a few dozen Obama supporters at Obama's state campaign headquarters in downtown Raleigh.
Doyle says he believes so adamantly in Obama, he flew more than 2,000 miles to call voters to do the same.
"Barack Obama has been a leader on energy and has a record of standing up to the special interest he will put us on a path of energy independence and bring down the price of gas for the American people," Doyle said.
Obama beat out Clinton in Wisconsin's Democratic Primary in February after Doyle announced his allegiance.
So far Lieutenant Governor Bev Perdue and State Treasurer Richard Moore have endorsed Obama, but Doyle says he has yet to hear the same support from Governor Mike Easley.
Also Wednesday, Hillary Clinton's campaign held a grand opening of its statewide campaign headquarters. Local officials, campaign staff and supporters all gathered on North West Street, in Raleigh.
"This place is going to be the hub of activity for Hillary in this immediate environment. So there will be people here all the time," Clinton Volunteer, Pat Orrange said. "If anybody wants to come in, make phone calls, get posters, get buttons this is the place this is the center of our activity for the next month."
The opening of the office comes on the heels of campaign visits from Hillary Clinton earlier this week.
Friday, Bill Clinton is scheduled to campaign in Pembroke, Laurinburg and Monroe.