Brasília: Brazil’s once hugely popular president Luis Inacio Lula da Silva faces a new grilling Wednesday by the country’s chief anti-corruption judge, Sergio Moro, in a case that could decide whether Lula can return to power. Lula, who is a frontrunner in the October 2018 presidential election despite multiple corruption charges, will be questioned by Moro in the southern city of Curitiba. The testimony is part of 71-year-old Lula’s trial for alleged bribe taking from the scandal-plagued Odebrecht construction giant. He is already a defendant in four other corruption trials. And in July, Moro sentenced Lula to 9.5 years prison after being convicted in a sixth trial of receiving a seaside apartment from the OAS construction company in return for help obtaining lucrative contracts with the Petrobras oil company. Lula, the founder of Brazil’s leftist Workers’ Party, is free pending appeal of that sentence and hopes to string out or defeat the other cases so that he can run for a third term next year. But problems are mounting for the man whose 2003-2010 presidency made him Latin America’s new leftist giant. Although Lula tops the polls, that is partly because campaigning hasn’t started and name recognition gives him a head start. Also, his negative ratings are far higher than for other candidates. A recent bus tour of his electoral heartland in the north-east of Brazil met a lukewarm reception, drawing core supporters but not the kind of massive crowds that might have made judges afraid of tough action. Lula says the corruption charges are concocted to prevent his return. However, he has been hurt by testimony from his former economy minister and right hand man, Antonio Palocci, who told Moro last week that “the facts related in (the latest case involving Lula) are true.” Lula is accused of having Odebrecht buy the land for his Sao Paulo institute and providing an apartment in nearby Sao Bernardo do Campo. Palocci said a “blood pact” was reached between the Workers’ Party and Odebrecht in 2010 when Lula was handing over to his successor Dilma Rousseff, with the company giving the party the equivalent at that time of $171 million. Lula says that Palocci, who has been sentenced to 12 years prison, is testifying falsely under pressure. Party activists say they will demonstrate in Curitiba. The crowd is expected to be smaller than the approximately 7,000 that turned out for Lula when he was questioned by Moro in a previous case in May.