@Builder,
Rasmussen's methodology has a well,-known and well-documented republican bias. Unless they've changed their methodology, and they hadn't the last time I looked at them. their respondents were on land lines, but an increasing number of americans no longer use land lines. Land line users are strongly older and less flexibe or amenable to new technology, while the people who;;ve given them up tend to be younger, more hip for want of a better word, and less rigid and locked in.. (And of course by now everyone has a cell phone too, but if you're only drawing your respondents from people with land lines that ,makes no difference.)