You can find a lot about those figures at this site, http://www.opensecrets.org/industries/indus.asp?Ind=H04, and by exploring the related pages. Since 1990 drug industry money has been heavily in favor of Republican candidates; in the Bush/Gore election it was over 70% in support of Bush and colleagues.
There is a lot more to know about the impact of industrial contributions, particularly at House and Senate levels, which is tabulated for you at this site.