The trick is to always keep in mind what the data explicitly says. There is a correlation between states with low average income and high percentage votes for R

The trick is to always keep in mind what the data explicitly says. There is a correlation between states with low average income and high percentage votes for Romney. The sample in this set is the state. It says nothing about individual people. You cannot make any conclusions whatsoever about how individual income relates to voting based on that correlation. It is a fallacy to even attempt to do so without more data.