mˈɑːɹʃəl wʌz ᵻlˈɛktᵻd æz ɐ dˌiːˌɛfˈɛl mˈɛmbɚ tə ðɪ ˈeɪɾi fˈɜːst, ˈeɪɾi sˈɛkənd, ˈeɪɾi θˈɜːd, ˈeɪɾi fˈoːɹθ, ˈeɪɾi fˈɪfθ, ˈeɪɾi sˈɪksθ, ænd ˈeɪɾi sˈɛvənθ kˈɑːŋɡɹəsᵻz, dʒˈænjuːˌɛɹi θɹˈiː, nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi nˈaɪn dʒˈænjuːˌɛɹi θɹˈiː, nˈaɪntiːnhˈʌndɹɪd sˈɪksti θɹˈiː; wʌz nˌɑːɾə kˈændᵻdˌeɪt fɔːɹ ɹiːᵻlˈɛkʃən ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti tˈuː tə ðɪ ˈeɪɾi ˈeɪtθ kˈɑːŋɡɹəs.
Marshall was elected as a DFL member to the 81st, 82nd, 83rd, 84th, 85th, 86th, and 87th congresses, (January 3, 1949 – January 3, 1963); was not a candidate for reelection in 1962 to the 88th congress.