So why is this happening? Isn't it a sign that they are proposing ideas more attractive to more and more people? Or alternatively people are becoming skeptical about ideas and policies realized so far by current government over the years?
I will add, this isn't terribly surprising in Europe. In Italy, due to flaws in their political system, you have had politicians parachuted in from the EU repeatedly to run the country...I am not sure what people expect. If you place significant limitations on democracy and then ignore public opinion, people will get annoyed.
Huge numbers of economic migrants make their way illegally to Europe. They have little education and no useful work skills. WTF are we supposed to do with them?
The correct solution is to send illegal migrants right back to Africa. However, only the far right parties dare say that - hence, the increasing support they are getting, despite their other positions.
In case you're unaware, the reason Europe has its current asylum standards largely because of what happened between 1933-1945. So would your proposed solution be:
1. Deny asylum to anyone and everyone, even those fleeing genocide ("Sorry that happened to you, we don't have room here!"), or
2. Implement a color chart a la Family Guy [1], so only the "right people" can come in?
[1] https://knowyourmeme.com/memes/family-guy-skin-color-chart