> So why in Norway they vote extreme right?
They/we don't. The "Progress Party", which is the furthest right party represented in parliament, got 16.3%. Down from 22.9%. They're for the most part to the left of the Republican Party. That they were invited into a coalition government for the first time was shocking to us, as it means it's the closest we've gotten to "American conditions" - a traditional slur in Norway, as most people, including a substantial majority still, do not want most of what the Progress Party wants.
You'll note that despite getting into a coalition with the conservative party (which got 26.8%, up from 17.2%), they have been unable to get through more than a few token tax cuts. Why? Because the centre-point in parliament is to the left of either one of them. They have to lean on the Liberal Party (Venstre), which is social-liberalists that'd fit in roughly on the left of the Democratic Party, or the Christian Democrats, which are social-conservative centrists, to get a slight majority.
Similarly, they've gotten through a few minor token changes to immigration policies, but have to give up on most of their policies because no other party in parliament agree with them on immigration.
About 50% of parliament is made up of the social democrat Labour Party, the Socialist Left party, and the slightly left of centre Centre Party who ruled for the preceding 8 years.
Norwegian "tradition" is that right wing governments sits for less than one period, up to almost two. No right wing government has survived a second election.