Not sure if this belongs in the politics forum or not, so feel free to move.

Probably an entirely spurious link but...

Hard water areas seem to have a leaning to the right wing in France
IMG_20170525_101359.jpg

And the UK
IMG_20170525_101604.jpgIMG_20170525_101612.jpg

And even to a lesser extent
IMG_20170525_101634.jpg

I've also seen similar ones for Holland and Germany


What's going on there then? Coincidence? Is soft water indicative of poor soil leading to historically poorer places?
Does hard or soft water have an effect on the brain?