Dilma Rousseff's first term was marked by a rise in the minimum wage and a drop in unemployment; but she faces criticism for poor public services and hosting what some people consider an expensive World Cup.
Her challenger, Socialist Party candidate Marina Silva, is an environmentalist from the Amazon who is also an evangelist.
Her corruption-free credentials are a strength, but some see her as too conservative on social issues such as gay marriage and abortion.
Aecio Neves, another contender, is running on his economic record. The former governor of a mining state left office with a 92 percent approval rating. But Neves is associated with the elite, and comes from a family of wealthy politicians.
Inside Story takes a look at what Brazil’s political future may hold.
Presenter: Sami Zeidan
Paulo Sotero, director of the Brazil Institute with the Woodrow Wilson Center.
Armando Castelar, economist and Professor of Economics at the Federal University of Rio de Janeiro.
Oliver Stuenkel, fellow at the Global Public Policy Institute and assistant professor of International Relations at the Getulio Vargas Foundation.
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Source: Al Jazeera