berlin german chancellor angela merkel fourth term office sunday europe powerful leader govern far less stable coalition fracture parliament conservatives haemorrhaged support surge far right two years merkel leave german border open million migrants anti-immigration alternative germany afd stun establishment become first far-right party enter parliament half century afd 13.0 percent vote expect one many shock night drama saw merkel conservatives get bad result since 1949 main social democrat spd rival bad since 1933. describe far right success test germans merkel insist mandate govern formidable challenge little choice cobble together three-way coalition pro-business group green course hop slightly good result humble merkel say conservative bloc slump 32.9 percent vote 41.5 percent last election 2013. add strong party mandate build next government coalition government build us euro eur=e4 slip around 0.4 percent early asian trade become clear result would make form coalition tricky merkel coalition build could take months merkel straightforward path majority parliament would three-way tie-up liberal free democrats fdp green arrangement untested national level social democrats serve merkel conservatives junior partner grand coalition past four years 20.6 percent vote nearly half voters repudiate two party dominate germany since world war two spd leader martin schulz say party would refuse rejoin coalition instead take position main opposition social democrats appear hurt badly government make difficult distinguish merkel conservatives shock election result last year britain vote leave eu election u.s. president donald trump leaders europe establishment look merkel rally liberal western order pastor daughter grow communist east germany act anchor stability europe beyond face unstable situation home must form coalition arduous process could take months sunday election fight tense backdrop surge support far leave far right party across europe deliver fracture german parliament six party group four previously josef joffe publisher-editor germany weekly die zeit say vote mark tectonic shift german politics three-way coalition merkel look likely try forge highly unstable lead afd candidate alexander gauland vow party would hunt new government whatever make-up add get country people back france far-right leader marine le pen congratulate afd tweet bravo afd ally historic show large group protesters gather outside afd post-election party police say make several arrest european jewish congress express alarm afd success add trust centrist party bundestag ensure afd representation come govern coalition afd say immigration threaten german culture deny racist neither tolerate xenophobia racist position simply either afd co-leader joerg meuthen say result make kingmakers fdp green play role recent past neither enough support give merkel majority fdp leader christian lindner ambitious 38-year-old preach ultra-hard line europe unsettle german political establishment say open coalition talk merkel germany need change course green katrin goering-eckardt say see cooperation three-way tie-up merkel conservatives fdp green know jamaica coalition black yellow green colour three party match jamaican flag widely see inherently unstable green keen regulation business-friendly fdp opposite end political spectrum clash policy visions would likely tax energy european union migrants despite lose support merkel europe long serve leader join late helmut kohl mentor reunify germany konrad adenauer lead germany rebirth world war two post-war chancellors win four national elections merkel hang power bleed support surge far right