Mohtalim

In fact, even when I used multivariate models controlling for a wide range of demographic and political factors (party, age, race, gender, income, education, and even religion), cell phone only respondents were still substantially more liberal than those with landlines.

Since 2004, the cell-phone-only population as a percentage of all adults has more than tripled and now includes nearly a third of adults between 18 and 24.
...
[On the other hand]
Handicappers started to assume that most of the undecided vote in such contests would "break" for the white candidate.