berlin german chancellor angela merkel monday dismiss idea christian democrats cdu defeat regional election make already tricky job form three-way national coalition even hard sufficiently hard enough anyway say still reel bad national result since 1949 september national election merkel conservatives slump 33.6 percent northern state low saxony poor show rich agricultural province nearly six decades see low saxony election result weaken us coalition task merkel say add regional issue play big role campaign social democrats spd vote low saxony home carmaker volkswagen vowg_p.de enmesh diesel emissions scandal 36.9 percent despite lag far behind conservatives campaign begin august education one key campaign topics three weeks poor national show merkel begin look set thorny coalition discussions liberal free democrats fdp green form jamaica alliance name party color correspond jamaican flag merkel say conservative bloc head talk know strong three group acknowledge negotiations would challenge sufficient conflict anyway one illusions merkel say policy areas three party expect clash include migration climate euro zone green co-leader simone peter say talk would tough due party vastly diverge program add must pull together see coalition negotiations possible conservatives meet fdp green separately wednesday hold three-way discussions friday merkel say expect exploratory talk initial stage party decide whether go ahead full-blown coalition negotiations last several weeks jamaica alliance untested national level extraordinary political constellation horst seehofer head christian social union csu cdu bavarian sister party say time christmas need use form stable government colleague alexander dobrindt skeptical whether succeed whether government form yet see say carsten nickel deputy research director teneo intelligence say weak cdu result would particularly worry csu face regional election next year csu fear low saxony demonstrate popular backlash merkel choices 2015 migration crisis yet say refer decision operate open-borders policy allow million migrants enter germany anti-immigrant alternative germany afd take almost million voters conservative bloc september national election sister conservative party put long-running internal dispute bed agree limit number migrants come germany merkel say weaken coalition talk state-level defeat