Munro was a founding member of the New Zealand National Party, and held significant executive positions in the party, helping it to victory in the 1949 general election.
mˈʌnɹoʊ wʌzɐ fˈaʊndɪŋ mˈɛmbɚɹ ʌvðə nˈuː zˈiːlənd nˈæʃənəl pˈɑːɹɾi, ænd hˈɛld sɪɡnˈɪfɪkənt ɛɡzˈɛkjuːtˌɪv pəzˈɪʃənz ɪnðə pˈɑːɹɾi, hˈɛlpɪŋ ɪt tə vˈɪktɚɹi ɪnðə nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi nˈaɪn dʒˈɛnɚɹəl ᵻlˈɛkʃən.