Interesting data points, but in isolation polling seems to be a rather poor method for determining this.

More conservative viewpoints are also associated with higher stigmatization of mental health conditions[1] and one indisputable measure of a mental health crisis (suicides) is more prevalent in rural areas compared to urban[2].

This seems like an obvious confounding variable. If you poll people have they been formally diagnosed with a mental health disorder, and one group of people refuses to seek treatment for it in the first place due to stigma, then _of course_ fewer of them are formally diagnosed.

[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6600024/ [2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8909802/

A shallow search seems to support that people with right leaning ideologies tend to stigmatize depression more and to not support mental health help and intervention.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6600024/ https://journals.sagepub.com/doi/10.1177/2378023120921652

A person who stigmatizes mental illness would be more likely to not seek help and would not admit that they have problems in a public survey.

As an example of this, the slate star codex post shows that alt-right people reported a very low percentage of diagnosed depression. The popularity of Jordan Peterson and his videos in that space is a clear signal that a lot of these people are seeking ways to deal with mental health problems. Even more, they're not looking for them through official channels, but through online celebrities and communities.

I would be very glad to be corrected with data on this as I'm not an expert, but I think it's an important point to consider when discussing mental illnesses where self-reporting makes a big difference in their diagnosis.