Is the sample not random, they ask the questions and then ask the demographics?
Every poll I've taken, they ask about you, then decide if you 'fit' their profile.
"Is the sample not random, they ask the questions and then ask the demographics?"
Yep, the EXIT POLLERS (11/04) claimed to have 'randomly' sampled voters as well until, of course, they couldn't reconcile their data with actual election results.
What do you think happened? I challenge you to do the research necessary to answer this question. I also challenge you to do the research necessary to discover why many polling experts have determined that RELIABLE/VALID polling results (particularly on the national level) are virtually impossible to achieve in today's polling environment.