Sebastião Afonso Viana Macedo Neves, better known as Tião Viana (Rio Branco, February 9, 1961), is a doctor and Brazilian politician. He was formerly Governor of Acre and is a member of the Workers' Party. He served as interim President of the Senate in 2007.[1]

References

  1. ^ "Nova República - Senado Federal". www25.senado.leg.br.
Political offices
Preceded by Governor of Acre
2011–present 		Incumbent
Preceded by President of the Federal Senate (acting)
2007 		Succeeded by
Allikas: http://en.wikipedia.org/wiki/Ti%C3%A3o_Viana
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