Many call people, some online polls (using advertising with demographic targeting), some emails to various news list subscribers, some in person polling, etc. It’s definitely harder these days to get accurate numbers because fewer responders means self imposed selection bias by those answering, which can correlate to the answers you get in unpredictable ways.
Yes
Different polls with different methods.
Many call people, some online polls (using advertising with demographic targeting), some emails to various news list subscribers, some in person polling, etc. It’s definitely harder these days to get accurate numbers because fewer responders means self imposed selection bias by those answering, which can correlate to the answers you get in unpredictable ways.