JafaPete blogs on US Research from Pew on whether or not respondents who have a cellphone and not a landline differ from those with landlines.
The answer in the US if yes they do, but the overall impact on findings is still relatively modest.
Advertisements
jafapete said
The “cell phone effect” was probably part of the reason that the GWU/Battleground tracking poll showed the race tied at the end of September, when other tracking polls showed Obama 5-6% in front.