In the early morning hours Monday, President Jair Bolsonaro of Brazil went to bed vindicated. The night¡¯s election results had shown, just as he had claimed, that the polls had severely underestimated the strength of his right-wing movement.

Hours later, he awoke to a new challenge: How to obtain millions more votes in just four weeks?

On Oct. 30, Bolsonaro will face a leftist challenger, former President Luiz Inš¢cio Lula da Silva, in a runoff election to lead Latin America¡¯s largest nation.