(S (S (NP (NNS Co-authors) (BASENP (NNP Halpern) (CC and) (NNP Heileman))) (VP (VBP have) (NP (BASENP (DT a) (NN history)) (PP (IN of) (NP (BASENP (JJ vocal) (NN criticism)) (PP (IN of) (NP (BASENP (NN media) (NN coverage)) (PP (IN of) (BASENP (DT the) (NN 2008) (NNP Presidential) (NN election)))))))))) (PERIOD .))