This poll is like "Thumbs up" or "Thumbs down" in the days of the Roman Empire.
Greer would be Caesar, looking to the crowd for indications of what they want.
A lot of elderly people do not understand Terri's case, I think. I have had to explain the case to my almost 90-year-old mother several times. Some of the elderly in Florida may not have anyone explaining to them that the news coverage is slanted.
I think she was worried that people who are fighting for Terri would also want to keep the dying elderly alive on respirators for years.
I'm oversimplifying and exaggerating...but I think you get the picture.