"Technology" doesn't really have degrees separate from science and engineering, so you can omit that. Or is this supposed to be IT ? we can run with IT.
Googling engineering and political leaning :
Engineers : 71%/29% democrat/republican. Where does the data come from ? Oh, campaign donation data, seems legit. They also have Mathematicians as a 90%/10% split in favor of democrats., IT at 74%/26% in favor of democrats. And science again similar.
I could probably look further but i am not sure it is worth the time. The other components of STEM unsurprisingly seem not much different at all from the science part.
No, that doesn't seem legit. A sample of only people who gave campaign contributions in an unstated timeframe is not good data for figuring out real numbers overall. Look at that number for engineering, look at it broken down by discipline.
Their mean ratio for engineers as a whole is nearly identical to the second most blue subcategory, which environmental engineering isn't really a big enough field to meaningfully change the number overall, even if they were far off that mean. Assuming they didn't mess up the numbers for this infographic (which I am assuming this), this suggests that political contributions from software engineers (many of who don't have degrees in the first place) are so numerous as to outweigh every other type listed. This does not mean engineers lean left, more likely it's a result of most engineers not making active campaign contributions while big tech employees notoriously flood the coffers of Democrats. But they're all out in California, that's what people in California do, that's not really tied to career or education.
Fact remains you wanted people to believe that real salt-of-the-earth work experience is likelier to lead people to the right, while silly fluffy higher education and namby-pamby fake jobs lead people to the left.
Are you denying those correlations, or are you just upset at the silly adjectives you added?
Well, in a sense conservative opinions are likely to be associated with knowledge and experience.
For instance, a male aerospace engineer working for a private arms company in Texas is likely to be more conservative than a female aerospace engineer who works for a public institution in New Jersey. I don't think it's going to be the actual engineering work they're doing that's the big difference in their political views.
Most private enterprise leans right, most careers funded through the government lean left, that all makes sense. Relative to factors like age, income, place of residence, etc, I'm not really married to the idea that education has any particularly strong effect on political leaning, and I believe the attempts I've seen at longitudinal data on this agree that people don't leave college particularly more or less liberal than when they entered. The relationship might be just correlation caused by compounding variables. Like twice as many people are getting degrees now than did 50 years ago, so the population with degrees skews younger than without. Or institutions with significant graduate and doctoral programs are predominantly inside major cities. Being young and living in a city (at least here) are long established correlates to liberalism, and education could just be a ride-along factor.
But if we are to consider the possibility that time in education impacts political leanings, I don't think the conclusion that conservatism is just ignorance that can be educated out of people holds water given any deeper analysis.