How did these post graduate majors vote? (2012)

[pbrower2a]

Physicians? It depends on who pays the bills. If their payers are insurance companies, they might trend Republican. If Medicare and Medicaid -- then they are likely to be Democrats.

Is the government a source of income or a drain through taxes?

Engineers? Those in the oil business almost certainly trend Right. Civil engineers? If their income depends upon government contracts they might tend liberal.