Voters Are Harder to Reach As Media Outlets Multiply (washingtonpost.com)

Voters Are Harder to Reach As Media Outlets Multiply

A lot of gems in this article but here's the Giant Unspoken Reality:

Given that people who do not answer their phone or cannot be reached may hold very different opinions than those who do, pollsters worry that they are reaching increasingly less representative samples of the public, potentially skewing a poll's results...

Well, I guess it IS spoken in this article, but this is a huge huge fact that has not gotten nearly the attention it deserves.