I don't know why it wasn't mentioned in this article, but it is widely assumed that Sweden's bid will fly through the ratification process in Turkey as soon as it's called. That's part of the reason he hasn't called it: he's got an election coming up. He's trying to show what a strong leader he is, getting the northern Europeans to do things on his terms, while also hoping to get rid of a few old political rivals and enemies who have taken shelter there. It'll probably pass quickly after the election, no matter who wins.