Social democrats-Moderate or Sweden democrats-Moderate? (The former is abbreviated SAP nowadays, and the latter SD)

I'll answer both. Social democrats-Moderate is not possible because Sweden has no tradition of grand coalitions and because they define themselves as the opposite of the other (while actually being quite similar).

Sweden democrats-Moderate is not possible because although the Sweden democrats has grown their support, they are also the most disliked party. Any party making a deal with them will pay a heavy penalty, and despite their tip of the scales position in the last parliament they have not wielded much power. Reinfeldt has also had a hard line towards the Sweden democrats, making it hard for him to jump into bed with them.

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