Here’s another choice Thalmann quote from that election’s Wikipedia: “Hitler must come to power first, then the requirements for a revolutionary crisis [will] arrive more quickly”
Unfortunately the source given doesn’t provide a path all the way to a primary one, and my geography and language skills aren’t conducive to searching newspaper archives for it. That gives you a sense of the philosophy of the KPD, though, at least until the last minute in the other election later that year when they woke up.
Your link reads like a giant wall of text to paper over a straightforward historical mistake.
Interesting! I found this study with an actual table of migrant political support by origin: https://www.dezim-institut.de/fileadmin/user_upload/Demo_FIS/publikation_pdf/FA-6235.pdf
Unfortunately Turks get lumped in with MENA in this one, and it comes out to around the the same as for other groups - probably because support from those derived from the rest of the Islamic world is low.
I can’t actually read German, but from the percentages not adding up I assume this is some kind of favourability rather than voting intention, and it still comes out to just 20% or so.