What kind of broad coalition would be on the table? Social Democrats+Moderates+Social Liberals are at 73 seats. Adding the Liberal Alliance, not sure if they are willing or even possible, the number rises to 87, adding the Conservatives, 97.
Absolutely not. A right wing libertarian party is completely at odds with the Social Democrats politics. Their last time in a right wing government was disastrous enough, supporting the Social Democrats would see them fall below the threshold. And anyways, LA had a great election and will be hoping to cement their position as a credible right wing party opposed to the Social Democratic led government.
I'm not too knowledgeable on Danish politics but could the more center-right and greenish Conservative People's Party join?