[admiralthrawn]

I am currently doing independent research trying to understand the demographics of several Congressional races across the nation. I want to know if there is a publicly available resource that can provide this information?

I have spent my time scouring all Supervisor of Elections websites but all the data available is just votes, not the break down of what people voted.

[Zagadka]

Drive by reply, but the government has a lot of statistical departments. Don't know exactly what demographics you are looking for, but here is a good start;

https://www.archives.gov/
https://www.census.gov/

This is also a list of agencies;

https://nces.ed.gov/partners/fedstat.asp