That right there is a widget being rereleased by Wired and Maplight. It is where you can search by state, office, or name and see the top ten contributors to each candidate. In other words, it is a way to see who is "buying" our candidates.
Some will deny it but the influence of donors and contributors to politicians is how some or many of their beliefs are formed. Take for example, out of my state, Linda McMahon, her largest contributors are JP Morgan Chase and Morgan Stanley. So she will be careful to pick what she supports as legislature in case it hurts those contributors in any way. It is just basic common sense at this stage.
Wired and Maplight are offering this widget for free to anyone who wants to use it. I think this is invaluable to people because this is a side that we don't often hear about in elections. We should see what some of the motivating factors are in people's campaigns. It is a good way to really see where each person stands based on what we know (factually not rumors) about each company.
This could be used in both a negative and positive way, but I hope that many will just use it to become better informed, rather than make judgements.