Antonio Cavalcante had a candidate for governor successfully barred after proving he had embezzled millions of dollars while he was a state legislator. Lourdes Garcia-Navarro/NPR hide caption

itoggle caption Lourdes Garcia-Navarro/NPR

Marina Silva, shown here in Rio de Janeiro on Wednesday, is tied in polls with incumbent President Dilma Rousseff. Silva, the candidate for Brazil's Socialist Party, says if elected next month, she would be "the first social environmentalist president." Silvia Izquierdo/AP hide caption

itoggle caption Silvia Izquierdo/AP

Lourdes Garcia-Navarro with her husband, James Hider, and their dogs Nena (left) and Ursa. Tara Todras-Whitehill/Lourdes Garcia-Navarro hide caption

itoggle caption Tara Todras-Whitehill/Lourdes Garcia-Navarro

Evangelical Christians hold their hands out in prayer during the annual March for Jesus in downtown Rio de Janeiro, Brazil, in 2013. Evangelicals play an increasingly large role in the nation's politics. Victor R. Caivano/AP hide caption

itoggle caption Victor R. Caivano/AP