This is happening right now in Germany. In two of our 16 federal states, the fascist party got around 30% of votes through fear mongering and propaganda. In one of the states, all of the remaining parties would be needed to create a functionable government with a majority, containing the whole spectrum from left to right. I am not sure about the future of this state.
Election day was only yesterday, so the exploratory talks for possible coalitions are only just beginning. The party with the second most votes (conservative) had already announced that it does not want to form a coalition with the party “Die Linke” (our leftmost party, this is also the case nationwide) but also not with the fascists. This leaves only a minority government with a center-left party and a new party that has both radical right and radical left issues in its program (if I have understood this new party correctly). But “Die Linke” has already said that it would play along with a minority government, even if it is not part of it, as long as they agree or negotiate on the respective issues.