Court verdict
Judges found that Chadema leader Lissu's statements about blocking the election were intended to disrupt the vote and encourage violence.
"We are satisfied that through his statements, the accused intended to disrupt elections and instigate violence," the judge said.
Lissu disputed his conviction on a charge different from the treason accusation he had faced.
"I was not charged with incitement but you judges are convicting me with it just to impress the person who gives you the titles," he said, apparently referring to President Samia Suluhu Hassan.
Lissu was arrested in April 2025 over a speech in which prosecutors said he told supporters the opposition would "block the election" and "mobilize rebellion." He pleaded not guilty, arguing that his speech broke no law and that the prosecution was politically motivated. Lissu has already spent 19 months in jail.
"All this was political persecution. Excuses were created to imprison me," he told the court after the verdict.