How's that advertising thing working out for you, Senator?
The brain behind J-Walk Blog created a graph that charts the advertising costs and votes of the major players in yesterday's Iowa caucus. (Click graph to enlarge.)
The diagonal line is the linear best-fit line. The two variables have a correlation coefficient of 0.779. (I have no idea what that means but it seems important.)
Romney paid the most per vote: $238. Obama and Clinton both spent about $103 per vote. The biggest bargains were for Edwards ($48/vote) and Huckabee ($35/vote).






