MONTEVIDEO, URUGUAY — In the shadow of Sunday’s presidential election in Latin American powerhouse Brazil sits Uruguay (/tags/topic /Uruguay). But while a country of just 3.4 million people, big things are afoot here, too. Voters will choose a successor to President José Mujica, who won unprecedented global admiration over his past four years in office. Mr. Muijica lives an austere lifestyle for a president, residing in a simple farmhouse next to a chard plantation and donating most of his salary to a low-income housing program. He has overseen radical social changes, including marijuana and abortion legalization, and reduced poverty during a period of healthy economic growth. “Government is not like a grocery store or a business; you can’t check the balance sheet,” says Mujica in an interview with The Christian Science Monitor. “But in general terms I'm satisfied” with my work as president.