Rodrigo Paz, who had trailed in the polls, won the first round of the presidential election on Sunday, as decades of dominance by a leftist party neared an end.
Senator Rodrigo Paz, right, at a campaign rally last week with his running mate, Edman Lara. Mr. Paz will face Jorge “Tuto” Quiroga in the second round of Bolivia’s presidential election in October.
Despite being barred from running again for president and being sought for arrest, a towering figure of Bolivian politics is trying to rally supporters to cast null votes.