(S (S (BASENP (JJ Early) (NNS voters)) (VP (VP (VP (VBD wreaked) (BASENP (NN havoc))) (PP (IN on) (BASENP (DT the) (NN city) (NN streets)))) (COMMA ,) (S (VP (VP (VP (VBG causing) (BASENP (NNS backups))) (PP (IN near) (BASENP (NN polling) (NNS locations)))) (CC and) (VP (VBG interrupting) (NP (BASENP (JJ traffic) (NNS flows)) (PP (TO to) (NP (NN area) (BASENP (ADJP (ADJP (JJ elementary)) (CC and) (ADJP (JJ senior) (JJ high))) (NNS schools)))))))))) (PERIOD .))