Here’s a link to an AP news article titled: “Some lawmakers send few to academies,” by Brian Witte:

 http://news.yahoo.com/s/ap/20091120/ap_on_re_us/us_military_academies_minorities

The article discusses that most of the Reps with low nomination totals are from urban districts with high minority percentages.  Some of the worst offenders, however, are also leaders in the anti-war efforts, although a direct correlation is not necessarily made between their politics and low nomination count.  But it also discusses how some Reps who support the system still have difficulties in drawing candidates to nominate because of a perceived poor opinion of serving in the military by minorites and others in their districts/states.  I do have one problem with the the article and its title.  A Rep or Senator can only have 5 seats filled at each academy at one time, even though they can nominate up to 10 candidates for 1 seat.  They could nominate any amount from 15 to 150 candidates over 4 years, but could still fill all 15 seats with just 15 nominees.  Therefore, they would still be sending the same amount to the academies as others, just nominating less.  The bigger problem is if seats available to Reps and Senators are going unfilled, which is not addressed in the article.  It would be more interesting to know who these people are.