Together, the three parties now collect 12 out of 41 mandates, so nowhere near a majority.
In the collaboration, the parties also exclude the Sweden Democrats.
Their first name, Stina Isaksson, was shocked by the news when it was presented.
- I'm a bit taken to bed.
It is bad that this comes as a surprise, she says.
She points out that C, M and KD could have formed a majority together with SD, there would have been 22 mandates.
- We are very disappointed about this, of course.
We were counting on some form of cooperation with above all the Moderates.
S steering most likely
SD has previously set its sights on the post of opposition councilor as they are the second largest party.
What will happen with that matter now is unclear.
The Center Party's Malin Svan says that the most likely thing is a minority government with the Social Democrats at the head.
The Social Democrats have declined to comment on the situation to SVT Nyheter Halland on Wednesday.
In the clip, Malin Svan (C) talks about how they see the next four years and why they choose not to cooperate with the Sweden Democrats.