Senator Flavio Bolsonaro, the eldest son of former President Jair Bolsonaro, said on Sunday he may not run for president in next year's general election, APA reports quoted Reuters.
His stance marks a reversal from an announcement on Friday, when the younger Bolsonaro said his father had chosen him to run on the Liberal Party's ticket, jilting markets which had bet on a more seasoned candidate consolidating support on the right.
A definitive announcement would come on Monday, the senator said after attending a religious service.
"There's a possibility I won't go all the way," he said, adding his stepping down would come "at a price."
"I just want you to think about what's at stake in Brazil and how much it's worth for me to withdraw my candidacy."