Cell-phone respondents are 17-points more likely to vote for Barack Obama in Nevada than are home-phone respondents, according to the latest NBC News / Marist College poll, released 05/31/12. When Marist proportionally blends the cell-phone respondents and the home-phone respondents, Obama leads in Nevada by a nominal 2 points. The cell respondents account for all of the President’s advantage.
Polls that exclude cell-phone respondents cannot be defended in 2012. Pollsters who claim to include cell-phone respondents but who do not disclose how many cell respondents, nor how the cell respondents vote, should.