(S (S (PP (IN In) (BASENP (DT the) (JJ intervening) (NN election))) (COMMA ,) (S (BASENP (DT the) (JJ victorious) (NNPS Conservatives)) (VP (VBD promised) (SBAR (IN that) (S (SBAR (IN if) (S (BASENP (PRP they)) (VP (VBD were) (VP (VBN elected))))) (S (BASENP (NN parliament)) (VP (MD would) (VP (VB hold) (NP (BASENP (DT a) (JJ free) (NN vote)) (PP (IN on) (SBAR (IN whether) (S (VP (TO to) (VP (VP (VB amend) (CC or) (VB repeal)) (BASENP (DT the) (NN Act)))))))))))))))) (PERIOD .))