(S (S (NP (BASENP (JJ Past) (NN election) (NNS victories)) (PP (IN since) (BASENP (NN 1997)))) (VP (VBP have) (VP (VBN strengthened) (NP (NP (BASENP (NNP Chavez) (POS 's)) (BASENP (NN control) (CC and) (NN popularity))) (PRN (LRB -LRB-) (PP (IN with) (NP (ADJP (QP (ADVP (RBR more) (IN than)) (NN 60)) (NN %)) (BASENP (NN approval) (NN rating)))) (RRB -RRB-)))))) (PERIOD .))