Whakaotihia te rerenga e whai ake nei: I te tau 1918, ko te Democrat McGlennon, ko te kaiārahi o te nuinga o te senate o te kawanatanga, i hinga i te Republican William Ross e 299 noa iho nga pooti i roto i te 25,000 o nga pooti i tukuna. Ko McGlennon te kaitono i whiriwhiria ki te 66th United States Congress (4 Maehe 1919 <unk> 3 Maehe 1921), e tohu ana i te rohe 8 o New Jersey i te United States House of Representatives, engari kaore i angitu te kaitono mo te reanga i te 1920 ki te 67th United States Congress. I mahi ia hei karere ki te
Ko te Huihuinga ā-Motu ā-Rōpū i te tau 1920. I te tau 1924, i tohua ia hei kaiwhakawa mo te New Jersey Court of Errors and Appeals a mahi ana ia tae noa ki tona matenga. I mahi ano a Cornelius hei kaiwhakahaere matua i Harrison, New Jersey mai i te 1926 ki te 1931.