Madagascar’s electoral court declared former finance minister Hery Rajaonarimampianina president-elect on Friday. But his defeated rival, Jean Louis Robinson swiftly rejected the results, alleging widespread rigging of the vote. The ruling raises the spectre of a prolonged row over the result of the December 20 vote, the first since a coup on the Indian Ocean island in 2009, extending a political crisis that has sharply slowed economic growth and deepened poverty.