Hillary actually won the popular by more than 2.1% look at the total, she only won by 2.1 million there when the final tally was 2.9 million. So really the polls were closer than RCP notes.
Approval polls are more of a popularity poll. People personally liked Obama based on polls but hated his policies. More people dislike trump as a person, of course his approval numbers will be down. Many people approved of Obama on the polls because they didn't want to be seen as racist by the pollsters.
There are definitely biases, and I'm sure there are examples of what you mentioned re: Obama. Much better to look at how the poll is trending over time than any one poll.
Hillary actually won the popular by more than 2.1% look at the total, she only won by 2.1 million there when the final tally was 2.9 million. So really the polls were closer than RCP notes.
Comments
https://en.wikipedia.org/wiki/United_States_presidential_election,_2016
I'm sorry that you chose VAJ to be your math tutor.
The method on this opinion poll under represents GOP voters.
It's subjective preseason polling bullshit anyway.
http://www.realclearpolitics.com/epolls/other/trump_favorableunfavorable-5493.html
Not surprised you didn't get that, being stupid and all