In SurveyUSA’s latest polling in North Carolina, Mitt Romney leads by 4 points among respondents reachable on a home telephone, Barack Obama leads by 11 points among respondents not reachable on a home telephone. When the two populations are blended, the contest is effectively even, Romney 45%, Obama 44%.
In reporting results of an opinion poll, it is unacceptable for a pollster to fail to include cell phone respondents, and it is insufficient for a pollster to mention in passing that he/she has included cell phones, but not say how many. SurveyUSA is one of two pollsters that crosstabs key responses by landline and cellphone, so poll scholars can make an informed judgment about just how much torque the cell population is applying to the results. Research in North Carolina conducted for WRAL-TV Raleigh. Complete poll results available here.