I'm not really talking about electoral results. I'm talking about the NYT articled I linked to, which measures "how right wing" a party is by looking at what's mentioned in the platform. But what's mentioned in party platforms is a product of what debates are happening in society. In places without much immigration, immigration isn't a focus of politics and won't warrant merit on party platforms, even if the members of the party would have strong nativist views if there was actually a significant amount of immigration.

For example, in the United States, "making English the official language" was a hot-button political issue for a long time (before even Republicans gave up on it). In France it wasn't, because nobody disagreed that French should be the official language (and it was). So if you read party platforms to gauge right-wing views, you might conclude that the French aren't right wing on this point, because party platforms don't mention it. But in reality, it's not mentioned because it's not something that's even up for debate.