Guatemala voters have sent two presidential candidates from opposite ends of the political spectrum to an Aug. 20 runoff, giving hope to many disenchanted voters that change might be possible. With 98% of the votes counted, the Supreme Electoral Tribunal reported that former First Lady Sandra Torres for the conservative UNE party had captured 15.7% of Sunday’s vote and Bernardo Arévalo for the leftist Seed Movement had 11.8%. None of the candidates neared the 50% threshold needed to win in the first round. Irma Elizabeth Palencia Orellana, president of the Supreme Electoral Tribunal, said in a news conference Monday that the results were “practically unchangeable.”