Brazilian presidential candidate Eduardo Campos was killed in a plane crash on Wednesday (August 13, 1914).
Campos' jet crashed in bad weather as it prepared to land in the coastal city of Santos, in the south of Sao Paulo, killing all seven people on board, the São Paulo state fire department said.
Campos, 49, was in third place in recent polls with the support of about 10 percent of voters.
President Dilma Rousseff, who is leading the race, suspended all campaigning for three days in mourning. Senator Aécio Neves, the candidate running in second place, said he was "immensely saddened."
Dilma is leading in polls with about 36 percent of voter support. Aécio has enjoyed about 20 percent support and is expected to face Dilma in a second-round runoff.
Campos, a former governor of the northeastern state of Pernambuco, was running as a business-friendly leftist and had strong support from many banks and industrial groups. His death could see Marina Silva, his running mate, become the Brazilian Socialist Party's candidate.
Marina Silva was not aboard the plane that crashed. She placed a strong third in the 2010 presidential election and enjoys robust support from young voters and evangelical voters but her pro-environment agenda means that many in Brazil's powerful agribusiness sector distrust her.
On the night before his death, Campos was in Rio de Janeiro for an interview with the country's most-watched nightly news program. Several pundits praised his performance as confident and authoritative and said he might rise in polls as a result.