Fools, I told you CDS always underpolls. There is no PS-BE majority, but there is a PS-CDS one. It wouldn't be the first time it happened.
That might not be a bad a thing. At least you would get a fairly centrist government. My understanding is the CDS is centre-right like the Social Democratic Party and the difference is primarily what type of conservatism. Otherwise the PDS is more fiscally conservative while the CDS is more socially conservative. Off course a left wing government here would be possible if the PS-BE-PCP formed a three party coalition, but I cannot see this happening.