berlin germany would-be coalition partner continue talk friday all-night negotiations fail produce breakthrough chancellor angela merkel conservatives say would compromise climate change policies secure deal conservatives pro-business free democrats fdp green remain divide climate policy immigration agree press past self-imposed deadline weekend party leaders friday discuss different stances foreign defense trade european policy various format expect continue saturday haggle climate protection immigration transport agriculture speak reporters arrive talk morning merkel say go negotiations intention despite difficulties carry task voters give us form coalition ... tough worth go round two volker kauder parliamentary floor leader christian democrats cdu say prepare compromise reduce emissions coal-fired power station assuage green concern feel readiness side everyone make concessions tell reporters officials schedule talk run sunday afternoon believe exploratory talk must end weekend failure agree could lead new elections something mainstream party fear could lead far-right alternative germany afd make gain surge parliament september new election could also weigh heavily euro merkel could still approach previous coalition partner social democrats spd say want stay opposition suffer bad election result since 1933 sept. 24 poll third option government without parliamentary majority would unprecedented germany post-war history merkel force explore tricky option three-way jamaica coalition so-called party color match island nation flag camp lose vote far right small party pressure rank-and-file supporters give grind haggle concessions need government program right merkel bavarian ally christian social union csu want coalition accord limit immigration shore support home state afd threaten unseat 60 years power regional election next year anathema left-leaning green want preserve right successful asylum seekers bring families join germany position back two thirds voters accord poll zdf television green fear give way demand close 10 gigawatts pollute coal-fired power station would alienate voters reject merkel previous compromise offer seven gigawatts fdp return parliament four years wilderness deputy leader wolfgang kubicki sound pessimistic talk tell ard tv party still far apart key issue migration fight climate change finance domestic security imagine get together short time available even kubicki say new deadline reach provisional agreement sunday pm 1700 gmt fdp party secretary general nicola beer add move forward inch day fdp want tax cut please small medium-sized business supporters tall order give compete fiscal demand boom economy could come party aid ifo institute friday sharply raise forecast german economy grow 2.3 percent 1.9 percent year mean berlin count high tax take report german chamber commerce industry friday find rise tax revenues mean government would 76 billion euros 89.63 billion spare spend four years twice early finance ministry estimate 0.8480 euros german party head long weekend coalition talk