<p>I used the Donut directory search results for (current) undergrads when searching for each major, so there might be a big discrepancy between what people have graduated with in the last four years versus what people who are current upperclassmen have declared. The main flaw with the directory is that it finds people under all majors they’ve declared in addition to their current major, so the ones that people switch out of a lot like astrophysics, chemical engineering, electrical engineering, and physics are going to be a bit inflated. It definitely shows a lot more mechanical engineers than electrical though, which I think is just because of a recent surge in popularity for that major. CS, also, is a very rapidly growing major which is understandably better represented now than it was for the classes of 2003-2007.</p>