Brazil's top court has rejected a request to release former president Luiz Inacio Lula da Silva following allegations that the convicting judge had been biased.
The court voted to postpone debate on whether Justice Minister Sergio Moro had been impartial when he handed Lula his first conviction in 2017.
Lula's lawyers have accused Moro of conspiring with prosecutors to keep the 73-year-old ex-leader out of the election race that he was favourite to win.
Lula is currently serving nearly 25 years in jail after being found guilty of corruption and money-laundering charges.

Iran sends missiles into Israel, dismisses Trump's talk of negotiations as 'fake news'
Iran denies talks with US after Trump postpones strikes on power grid
Israeli minister calls for annexation of southern Lebanon
Kim Jong Un says North Korea’s nuclear status is irreversible, threatens South
Japan to start releasing oil from joint stockpiles by end-March, PM says
Death toll nearly doubles to 66 in Colombian military plane crash
Seven overhead power lines out of service due to falling debris in Kuwait
Airstrikes on Iraqi site kill 10 fighters including commander
