What is the average IQ of Senators?

This question can not be answered since an IQ test is not given to run for office. One must assume that it is fairly high since about 80% are college graduates. Yet, common sense is not given out as part of a degree. Sometimes a little bit of "street smarts" is good to have with a college education since it can help the person understand how 90% of the world lives. It is also true that smart people, when they get into a position of authority and power, have a tendency to forget how the rest of the world lives from day to day. Washington DC is rather removed from reality.