By Sarah Kinosian and Nelson RenteriaSAN SALVADOR (Reuters) - The landslide re-election of El Salvador President Nayib Bukele was cheered by supporters of his gang crackdown, but has worried opponents who fear the country is sliding into a de facto one-party state. El Salvador had "made history" for electing a single party "in a fully democratic system," he said. But rights groups said they are worried about where the country is headed and forecast further curbs on civil rights. They are just grateful he crushed the gang violence plaguing El Salvador for decades and that they can go outside after dark again. "Democratic spaces are closing in El Salvador, civil society is closing down and there is an environment of fear to speak out," said Claudia Ortiz, a lawmaker who has clashed with Bukele and ran for the upstart Vamos party.

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Persons: Sarah Kinosian, Nelson, Nayib Bukele, Bukele, El Salvador, Gabriela Santos, State Anthony Blinken, Daniel Ortega, Gladis Munoz, Claudia Ortiz, Nelson Renteria, Drazen Jorgic, Christian Plumb, Rosalba O'Brien Organizations: SALVADOR, Reuters, El Salvador, U.S, Human Rights, University of Central America, El, State, Bukele Locations: El Salvador, U.S, Central America, El, Nicaragua, Venezuela