Brazilian politician still in shock, party stunned by candidate's death

Former Senator Marina Silva reacts during a ceremony with former Governor of Pernambuco state Eduardo Campos (not pictured) to announce their candidacies for president and vice president of Brazil in the general elections to be held next October, in Brasilia in this April 14, 2014 file photo. REUTERS/Ueslei Marcelino

BRASILIA (Reuters) - Brazilian environmentalist Marina Silva is still in shock from the death of presidential candidate Eduardo Campos and has not begun to consider whether she will run in his place, a close friend said on Thursday.

That closely watched decision could upend the Oct. 5 presidential race and threaten President Dilma Rousseff's re-election bid, given Silva's appeal to disaffected voters tired of the country's traditional parties.