geauxtohell
Choose your weapon.
This looks like a desperate excuse.
Conservatives use cell phones - as well as the internet (which has surprised the left).
The point is the 18 to 30 crown mostly use cell phones, and have no land lines, and pollsters usually ignore cell phones. The majority of 18 to 30 crowd are liberal or vote for democrats. It is easy to see why the polls could be unbalanced.
Most Americans have cell phones - of all age demographics... I don't know of any 30 to 50 year olds in my immediate circle who don't have one... In fact, the 30-50 yr olds are more likely to vote than the 10-30 crowd... Those are important numbers to consider...
Without underlying data there's no way to prove any unbalance...
Not just "have a cell phone", but "have a cell phone only" in that they don't have a landline and don't pop up on the pollster's radar.
Like you said, it might be statistically insignificant, but I think it's a relatively point.