How do Master's Degree and First Professional Degree holders vote?

[King of Kensington]

The Census Bureau, BLS etc. break advanced degree holders into three groups:

Master's degree
Professional degree
Doctoral degree

Those with advanced degrees skew liberal, and within that group those with doctorates are the most liberal of all.

First professional degrees are defined specifically - they're basically for professional schools that are required for licensure in the profession and must be taken at the post-baccalaureate level (JD, MD, DDS etc.)  Master's degrees are more common and includes quite an array from academic degrees in the liberal arts and sciences as well as more professional-type programs like social work, teaching and engineering to MBAs and MFAs.

I'm guessing overall holders of Master's degrees as a group are more liberal than the Professional Degree group as the latter is more male and affluent.

[All Along The Watchtower]

The former are very Democratic (and getting more so, at this rate) while the latter are less solidly Democratic but still are definitely trending that way (if they're not there already, that is; I suspect that they already are).

A lot of this, though, varies depending on all of the usual factors: income, occupation, industry, academia vs. professional, for-profit vs non-profit work, level of urbanization, race, gender, region, religiosity (or lack thereof), the particularly religion or denomination (Christians - and political divisions within Christianity, between and within both Catholicism and Protestantism - vs.  Jews vs. Muslims vs. Hindus vs. Buddhists etc.), sexual orientation, age, and marital status/family structure (ie. whether or not a married - or in some cases, unmarried - couple has children).

I do definitely think that the more that "Trumpified" the Republican Party becomes, when combined with generation replacement and with all of which has been associated with that - growing diversity, women and certain racial and ethnic minorities and immigrant groups continuing to outpace native-born white men in educational attainment, changing family structures (or the rise of "non-traditional" families, or no families at all) increased urbanization, along with increased personal debt (especially student loan debt, in this context) with a glut of low-wage jobs and increased stresses, competition, and barriers to entry for the dwindling number of higher-paying jobs (relative to the growing post-grad population, at least - specifically among Millennials)...basically, I anticipate that the Republicans' already declining share of the post-grad vote only decline more so in the coming years - and more rapidly, at that.

[King of Kensington]

BTW, if you're filling out the census or other surveys, I take it first professional degrees "outrank" master's degrees - so a lawyer who also has a master's degrees would be put in the professional group.  That is of course debatable, as they don't really fit neatly into the bachelor's/master's/doctorate hierarchy...