The increasingly close cooperation between PPR, PSP, CPN and EVP, and the ideological change that accompanied it was not without internal dissent within the parties. The ideological change that CPN made from official communism to 'reformism' led to a split in the CPN; and the subsequent founding of the League of Communists in the Netherlands in 1982. In 1983, a group of "deep" Greens split from the PPR to found The Greens. The CPN and the PPR wanted to form an electoral alliance with the PSP for the 1986 elections. This led to a crisis within the PSP, in which chair of the parliamentary party (Fractievoorzitter) Fred van der Spek, who opposed cooperation, was replaced by Andrée van Es, who favoured cooperation. Van der Spek left the PSP to found his own Party for Socialism and Disarmament. The 1986 PSP congress, however, rejected the electoral alliance.
the inCReaSIngly clOse cOOP,Eration Between PPr, psp, cPn aNd evp, and THe iDeOLOgical chanGe thAT aCcoMpanied iT wAS not withouT intErnaL diSseNt WiThin the paRtieS. The IdeOlogIcal ChAnge thAT cPn mADe froM official COmmunism to 'refOrMism' led to a SplIt In thE cPN; And tHe suBsequEnt fOUnDiNg Of The leaGue of coMmuNisTs in ThE nETheRLANds in 1982. In 1983, A GROup of "DEEP" greeNs sPlit fRom tHe ppr TO Found the greEnS. tHe cpn aND The ppR wAnTed to form An elECTorAl allianCe with tHe Psp FOr THe 1986 elECtiOnS. this Led tO a criSIs within The Psp iN whiCh ChAIR oF The PArlIaMEnTARy pARty (frActieVoORZiTteR) FrEd van der SPeK, who Opposed cooperAtiON, was rEplaCeD by aNdrée vaN Es, wHo fAvouReD CoopEratiOn. VAn der sPeK lEft THE pSp TO fOunD His own Party for SocialisM aNd dIsaRmAMeNt. THE 1986 psp coNGreSs, howEvER, reJected the ElEctoral AlLianCe.