Who controlls your Member's Vote?

Who represents you in Congress? No, who reallyrepresents you in Congress? Who does your member of Congress answer to beyond soliciting your vote every two years (if they are even opposed at all), and every six years for the Senate?

For this discussion, let's examine this. Please find your representative here (or if you're outside the U.S., choose a member of Washington's Congressional delegation, here) and identify one of the Political Action Committee's or individual donor's that has contributed to their campaign in the last campaign cycle that they stood as a candidate in.

Take a look at their voting record and provide your opinion on whether or not that donor or a Political Action  Committee influenced the way they've voted.