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António Costa promises to tackle structural problems as 41 people die in forest fires
First electoral test for centre-left prime minister since he took office two years ago
Debt and growth fears mean Lisbon remains constrained despite Brussels’ decision on fine
Downgrade will exclude country from any ECB stimulus
Biggest political upheaval for a generation
Grouping led by António Costa poised to replace centre-right administration with anti-austerity team
Centre-right former PM installed but opposed by leftwing grouping with parliamentary majority
Prime minister must contend with a parliament where left of centre parties command a majority
António Costa vows to ease austerity if elected next year
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