(S (S (BASENP (NN Opposition) (NNS candidates)) (VP (VP (VBD filed) (S (BASENP (NN suit)) (VP (TO to) (VP (VB overturn) (BASENP (DT the) (NNS results)))))) (COMMA ,) (S (VP (VP (VBG accusing) (BASENP (JJ electoral) (NNS officials))) (PP (IN of) (NP (BASENP (NN vote) (NN fraud)) (SBAR (S (VP (TO to) (VP (VB benefit) (BASENP (DT the) (NN ruling) (NN party)))))))))))) (PERIOD .))