This is an interesting web site that details campaign contributions and positions received. It is very interesting to see what an ambassadorship costs. They also have a link to the indictment of Tom Delay, amongst other things. It is a bipartisan web site, you can see who gave how much to your favorite Democrat as well.

http://opensecrets.org/

You can see it in action if you watch the papers. Just locally, Bush's fundraiser in Ohio was named ambassador to Switzerland (I think) and one of Clinton's major donors got his wife named to a judgeship in the Southern District of Ohio.

I realize that you can follow it in the news daily, but this summarizes it so nicely. The Supreme Court has decided cases based on the theory that money = speech. This highlights the truth that money = power.