Because in some sense these caricatures, like Boris, pop up when people are fed up with the status quo - even if they don't quite understand it, or if they are just able to see part of it. They just know something is wrong in their point of view - which is probably true.
I can give you the example of Portugal, the population is so fed up with the cycle of same parties giving us the same outcomes (mostly fueled by corruption), and those parties refuse to handle the corruption... because you know, now it's their turn... and we're yet again in a set back. So an extreme right party is gaining A LOT of ground, and doesn't show signs of stopping.
Our justice system doesn't have the tools (namely laws) to fight corruption, neither the bodies of the state have mechanisms to purge it. So, people are done with the status quo.
Hopefully here we have some changes that will stop this event from happening, because it's a matter of time.
To borrow a Boris Johnson turn of phrase, the vast majority of MPs in the Commons are great supine protoplasmic invertebrate jellies.
The MPs will talk the talk (like all politicians do), but when the time comes to walk the walk, they don't have the guts to go against the whip.
Which party is that? Google seems to be failing me and saying the opposite.
I'm saying it's extreme right in the context of the portuguese political spectrum and some of their stances/party program.
We do have them, it's BE, (hell we even have a Communist Party) - yet they are part of a "coalition" with the current government, so they are part of the problem, because they are pushing some of their agendas and avoiding any other agenda that destabilizes the current governmental solution.
So they are effectively part of the "system".
What's the result? The polls show that they are losing votes and popularity.
Yet no one talks about implementing EU norms to deal with corruption, implement ISO standards for corruption in public organizations/companies, justice system reforms, ban politicians from having jobs in companies/organizations that had businesses with the state (law firms, telcos, energy, construction, etc - this is the standard path for a "successful politician" career in Portugal), etc.
This is the true siphon of taxes, private deals where the state is always the underdog and has to pay rents in perpetuity adding up to thousands of millions of euros.
It's not the support of minorities, or the refugees boogieman that's coming to take our jobs...