Bolivians are expected to bring the curtain down on two decades of left-wing rule in the coming presidential elections, with two right-wing frontrunners promising radical changes to end a deep economic crisis. One of them, Samuel Doria Medina, is the businessman behind Green Tower, Bolivia's tallest skyscraper. Nearly 20 years after South America's longest-serving president, Evo Morales, was elected on a promise of socialist revolution, the Andean country is running on empty. Widespread shortages of dollars, fuel and basic foodstuffs have left some Bolivians worse off than before Morales took over, from 2006 to 2019. STOCKSHOTS OF GREEN TOWER, BOLIVIA'S TALLEST SKYSCRAPER