Buuxi weedha soo socota: Laga soo bilaabo 1923 ilaa 1924, Phelps wuxuu qabtay xilka Ku-xigeenka Wakiilka Arrimaha Halyeeyada ee Magaalada New York. Wuxuu ka soo shaqeeyay xubin Jamhuuri ah oo ka tirsan Golaha Gobolka New York oo ka soo jeeda Greenwich Village 1924, 1925, 1926, 1927 iyo 1928. Sanadkii 1928-kii, wuxuu u tartamay musharaxnimada Aqalka Wakiillada Mareykanka, laakiin wuxuu ka badiyay Ruth Baker Pratt, oo noqon doonta marwada ugu horreysa ee ka soo jeeda New York. Shirweynihii Jamhuuriga ee 1932 kadib, Phelps wuxuu noqday Dimuqraadi, wuxuuna u safray Shirweynihii Jamhuuriga ee 1936,
1956, iyo 1960 Shirweynihii Qaranka ee Dimuqraadiga oo wakiil ah. Wuxuu mar kale xubin ka ahaa Golaha Gobolka (New York Co., 3rd D.) sanadihii 1937 iyo 1938; iyo xubin ka tirsan Senate-ka Gobolka New York (13th D.) laga bilaabo 1939 ilaa 1942, oo fadhiyay Sharci-dejinta Gobolka New York ee 162aad iyo 163aad.