Public Policy Polling points out that the right-wing group that conducted this poll, the Civitas Institute, hasn't included this finding in its stream of press releases on the poll.
Tom Jensen says the North Carolina numbers show that even conservative voters are ready to drop the health care shouting and get on with fixing other problems:
The GOP really has a choice on health care- if they stop pushing on it now they will clearly have scored a victory on the issue. But if they keep up with lawsuits and repeal talk they risk having the tide turn against them by antagonizing voters who just want it to go away [Tom Jensen, "NC Opposes Health Care Lawsuit," Public Policy Polling, 2010.05.06].
Nullification was not a winning issue for John Calhoun. It won't be a winning issue for Marty Jackley. And it won't be a winning issue for anyone running in November.