sˈɪɾɪŋ wɪððə nˈæʃənəlˌɪst pˈɑːɹɾi ʌv ɔːstɹˈeɪliə, bˈɑːɹwɛl sˈɜːvd ɪnðə sˈɛnət ʌntˈɪl nˈaɪntiːnhˈʌndɹɪd twˈɛnti ˈeɪt, ˈɔfən klˈæʃɪŋ wɪð hɪz pˈɑːɹɾi kˈɑːliːɡz dˈuː tə hɪz aʊtspˈoʊkənnəs ænd ˌɪndᵻpˈɛndənt mˈaɪnd.
Sitting with the Nationalist Party of Australia, Barwell served in the Senate until 1928, often clashing with his party colleagues due to his outspokenness and independent mind.