berlin wary renew coalition conservative chancellor angela merkel germany social democrats instead contemplate so-called cooperation arrangement would see agree minimal program leave contest matter debate talk new government start wednesday cooperation suggestion see party answer dilemma centre-left party fear share power conservatives blur identity voters mind social democrat leader martin schulz say would lead spd opposition disastrous show september national election force reconsider merkel attempt form three-way government collapse leave europe economic powerhouse without new government spd members lawmakers reluctant sign simple repeat four-year merkel-led grand coalition voters reward junior partner worst-ever post-war election result paper see reuters tuesday lawmaker matthias miersch leader spd parliamentary leave caucus suggest two party agree cooperate minimal program leave matter open idea spd would contribute minister merkel-led cabinet would allow party support merkel conservatives areas party agreement leave areas subject ad hoc haggle parliamentary party options discuss say spd spokesman spd parliamentary caucus meet monday single model settle miersch proposal two blocs would agree common program areas broad agreement like house-building european investment program climate policy would also agree party provide ministry areas include pass budget european foreign affairs party would agree always seek consensus others would agree disagree potentially seek ad hoc majorities measure parliamentary party proposal could help win party faithful must give bless spd participation future government far do deal spd leadership believe early elections good party officials say merkel bloc clear interest half-agreements spd say julia kloeckner vice-chair merkel christian democrats cdu either want govern t. ministerial job full government responsibilty cherry pick little bite pregnant tweet partial power-share end german political dilemma spd say