Guyana's postelection political battle could delay approvals for the government's pending oil and gas projects, should it morph into a prolonged crisis and deepen rifts between the country's two ethnic groups. Guyana is no stranger to elections marred by fraud allegations. But with the small South American country set to become the world's largest per capita oil producer in the coming years, the outcome of its latest contested ballot will decide which party will benefit from the initial windfall of new income -- and with it, the opportunity to cement a long-term electoral advantage....