Republican gains in redistricting have been more pronounced in North Carolina than arguably anywhere else in the country. Miller's home has been redrawn into Price's district, and the district Miller currently represents is now much more Republican. Both of those factors have left Democrats bracing for an unpleasant primary fight between the two incumbents.

"While the Republican Legislature's blatantly partisan re-districting process has created the possibility of another incumbent challenging Price in the May 2012 primary election, our survey data show that David Price would approach his upcoming campaign with high favorables and strong (and intense) support," read the polling memo to Price's campaign.

The notion that Price's supporters are more intense stems from polling data showing that 72 percent of Price voters say they "strongly" support him, compared to 42 percent for Miller. In a primary in which Democratic voters might have to choose between two Democrats, that could have a substantial impact.

The poll of 404 likely Democratic primary voters in Price's new district was conducted Oct. 17-19 and had a margin of error of plus or minus 5 percentage points.