BUZZ-U.S.-listed Brazilian stocks fall
** State-owned Brazilian oil producer Petroleo Brasileiro Petrobras SA's U.S.-listed shares down 10.5 pct at $14.73; miner Vale SA down 2.9 pct, tracking decline in their home market
** Brazilian airline company Gol Linhas Aereas Inteligentes SA's U.S.-listed shares down 5.3 pct, beverage maker Ambev SA's down 3.9 pct
** An election poll released on Friday showed Brazilian President Dilma Rousseff gaining on challenger Marina Silva ahead of Sunday's election
** Brazilian investors are critical of Rousseff's government for enacting policies that have gone against minority shareholder interests in state-run companies
** Brazil's benchmark Bovespa stock index was down 4.29 pct at 10.17 am ET
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