I recently graduated from Kettering University which is about 80%+ mechanical engineering majors (supposudly graduates more mechanical engineers than any other college in the US), with the balance being probably 10% or so electrical engineers, and then a variety of physics, math, computer science, and the occasional "management" major (often people who started as engineers, but had academic difficulty).

Anyway, in my experience the vast majority of those in the school were very sharply on the conservative side of the spectrum. Also basically all the engineers I've worked with are pretty conservative.