Obama was leading Clinton in the Old North State, North Carolina in March – say the statewide “North Carolina Polls” conducted by several agencies in the month of March.    

Public Policy Polling’s North Carolina poll conducted on 3rd March showed Obama leading Clinton with 47% to 43% democratic vote. With the Margin of Error = 4.3%, the poll gave Obama 4 % point’s lead over Clinton. The poll indicated Obama’s win with slight margin.  

Rasmussen Reports’ North Carolina poll conducted on 6 March showed Obama leading Clinton with 47% to 40% democratic vote. With the Margin of Error = 3.7%, the poll gave Obama 7 % point’s lead over Clinton. The poll indicated substantial win for Obama.  

Survey USA’s North Carolina poll conducted on 8-10 March showed Obama leading Clinton with 49% to 41% democratic vote. With the Margin of Error = 3.7%, the poll gave Obama 8 % point’s lead over Clinton. Again, the poll indicated substantial win for Obama.

Public Policy Polling’s North Carolina poll conducted on 17 March showed Obama leading Clinton with 44% to 43% democratic vote. With the Margin of Error = 4.3%, the poll gave Obama just 1 % point’s lead over Clinton. The poll indicated Obama win with razor thin margin.

Public Policy Polling’s North Carolina poll conducted on 24 March showed Obama leading Clinton with 55% to 34% democratic vote. With the Margin of Error = 3.8%, the poll gave Obama 21 % point’s lead over Clinton. The poll indicated comprehensive win for Obama.     
   
Insider Advantage North Carolina poll conducted on 27 March showed Obama leading Clinton with 49% to 34% democratic vote. With the Margin of Error = 4.6%, the poll gave Obama 15 % point’s lead over Clinton. The poll indicated huge win for Obama.

Public Policy Polling’s North Carolina poll conducted on 29-30 March showed Obama leading Clinton with 54% to 36% democratic vote. With the Margin of Error = 2.9%, the poll gave Obama 18 % point’s lead over Clinton. The poll indicated massive win for Obama.     
   
American Research Group’s North Carolina poll conducted on 29-30 March showed Obama leading Clinton with 51% to 38% democratic vote. With the Margin of Error = 4.0%, the poll gave Obama 13 % point’s lead over Clinton. The poll indicated huge win for Obama.     

Charlotte Observer WNCN Poll conducted on 29 March and 1 April in North Carolina showed Obama leading Clinton with 35% to 26% democratic vote. With the Margin of Error = 4.7%, the poll gave Obama 9 % point’s lead over Clinton. The poll indicated substantial win for Obama.