BTW, who is/are the most conservative political party/parties/individuals in Sweden?
It depends on your take on conservatism.
The most popular party are Social Democrats (the name talking) followed by Moderata samlingspartiet who describe themselves as ‘liberal conservatives’ being socially liberal and economically moderate. The third are Swedish Democrats who are somehow conservative by Swedish standard arguably being to the left of US Democrats but to the right of the two above.
In any way the Left (Communist) and Green party combined has more followers than this poor excuse of ‘conservative’ Democrats. Also Democrats has at best four times lesser followers than Social Democrats.
There is exactly one party, the Sweden Democrats (SD) that does not want to destroy Sweden through the replacement of Swedes with Muslims from various sh-t holes source countries.
Every other party either actively seeks, or passively accepts, the obliteration of the Swedish people and their homeland.
Unfortunately, the Swedes are a weak people with a very feminized society, so the SD is very unlikely ever to get the 51 percent it would need to govern alone.