Over here in my parts of Eastern-Europe the government just announced yesterday that starting tomorrow (Saturday) the mask won't be mandatory anymore in almost all outdoor spaces for everyone, a statement which was received with joy and relief by almost everyone, no matter their political orientation.

There is perhaps a correlation between masks and political leaning, but there is also cross correlation between those things and higher education, age, race, urban residence, and other confounding variables.

Moreover, I think it's a greater signal to refuse to wear a mask. At least where I live, pretty much everyone goes along with the mask guidance despite a large Republican presence. So if you're simply wearing a mask, there's not much ground to assume anything about your political affiliations.