Evo Morales, Bolivia's former president, has expressed uncertainty about threats from right-wing presidential candidates to arrest him if they gain power. Speaking from his stronghold in Chapare, Morales urged voters to deface their ballots in Sunday's elections. He is barred from the race due to a court ruling. Morales faces charges of human trafficking and has described them as politically motivated. The Movement Toward Socialism Party has splintered amid a power struggle, giving the right-wing opposition a strong chance. Morales criticized the election as lacking legitimacy and predicted a high number of invalid votes.