(S (S (BASENP (PRPD His) (NN defection)) (VP (VP (VP (VBD stirred) (NP (BASENP (DT a) (NN firestorm)) (PP (IN of) (BASENP (NN controversy))))) (ADVP (RB locally))) (PP (IN in) (NP (BASENP (DT the) (ADJP (RB staunchly) (JJ left-leaning)) (NN riding)) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBD had) (VP (VP (VP (VBN elected) (BASENP (DT a) (ADJP (JJ Progressive) (JJ Conservative)) (NN candidate))) (ADVP (ADVP (RB exactly) (RB once)) (PP (IN since) (NP (NP (BASENP (PRP it) (POS 's)) (NN creation)) (PP (IN in) (BASENP (NN 1953))))))) (COLON -) (PP (IN during) (BASENP (DT the) (NN 1958) (NNP Diefenbaker) (NN landslide))))))))))) (PERIOD .))