Analysis of Super PAC Ads During the 2012 Republican Nomination

Analysis of Super PAC ads during the 2012 Republican nomination shows that they

A) spent over 80 percent of their money on positive ads supporting their most aligned Republican candidates.
B) spent over 70 percent of their money on negative ads attacking other candidates.
C) split about 50-50 between ads supporting candidates and negative advertising.
D) were highly idiosyncratic and showed no consistent pattern of positive or negative spending.
E) began by spending heavily on positive ads in favor of candidates, but then moved to overwhelmingly negative attack ads by the middle of February.