emailing ANY of the contingency is an exercise in futility. If you're lucky you get a canned response a month later. Calling is even worse. As I understand it from various pols, only if you are 'somebody' does it mean something to staff. Try leaving a message like: "This is Smedley Butler and I want to donate $100,000 to _____pac. You will get called back real quick, but when the jig is up they hang up!