7 points
The polls are, of course, measuring the opinions of ONLY the people who still have landline telephones.
4 points
Addressing the “Landline Only” Polling Myth
I set out to analyze FiveThirtyEight’s collection of 400+ primary polls from the past year, closely inspecting their results and methodologies. It didn’t take long to realize that poll participants were actually reached a variety of ways. These included calling cell and landline numbers as well as contact via the internet, text, and traditional mail. So as far as the “landline only” controversy was concerned, that myth was quickly debunked.
