(S (S (NP (BASENP (DT The) (NNS results)) (PP (IN of) (BASENP (DT this) (NNP Zogby) (NN poll)))) (VP (VP (VBD were) (VP (VBN released) (NP (BASENP (JJ last) (NNP Monday)) (PRN (LRB -LRB-) (BASENP (NN 22) (NNP May)) (RRB -RRB-))))) (CONJP (COMMA ,) (CC but)) (VP (VP (VP (VBD went) (ADVP (RB largely))) (S (VP (VBN unreported) (PP (IN by) (BASENP (DT the) (JJ mass) (NN media)))))) (COMMA ,) (PP (ADVP (RB possibly)) (PP (JJ due) (PP (TO to) (NP (BASENP (NN bias)) (PP (IN within) (BASENP (DT the) (NN source)))))))))) (PERIOD .))