An editorial in today's New York Times asks this question, and it's a good one. We live in an increasingly complex world, yet in the US Congress we have only one physicist, one chemist, one microbiologist, and six engineers. There are some doctors and nurses too, but not many (about two dozen).
There's no guarantee that a scientist or engineer will be a good leader or politician, but having more people in Congress who are capable of analysis and reason strikes me as being a good thing.
Bill Hooke, Senior Policy Fellow for the American Meteorological Society, runs a summer colloquium for graduate students and professionals with a strong interest in atmospheric policy. The registration deadline for this summer is 1 March. I attended several years ago and it is an incredible opportunity. One morning during the colloquium, I had breakfast with Neil Lane, former science advisor for Bill Clinton. We had dinner with Vernon Ehlers, then a republican member of the House of Representatives. If policy and politics interest you, look into the colloquium.
This is not the emphasis of the colloquium, but Bill has a hope that someday we'll see a meteorologist elected to Congress.