Pedzisa mutsara unotevera: Kubva muna 1923 kusvika muna 1924, Phelps aiva mutevedzeri wemutevedzeri wemukuru mukuru anoona nezvemabasa evakuru vehondo muNew York City. Akashanda senhengo yeRepublican yeNew York State Assembly kubva kuGreenwich Village muna 1924, 1925, 1926, 1927 uye 1928. Muna 1928, akamhanyira kusarudzwa kweUnited States House of Representatives, asi akarasikirwa neRuth Baker Pratt, uyo aizova mukadzi wekutanga wekongiresi kubva kuNew York. Kutevera 1932 Republican National Convention, Phelps akava muDemocrat, uye akaenda ku1936 Republican National Convention,
1956, uye 1960 Democratic National Conventions somumiriri. Akanga arizve nhengo yeState Assembly (New York Co., 3rd D.) muna 1937 na 1938; uye nhengo yeNew York State Senate (13th D.) kubva muna 1939 kusvika muna 1942, akagara mu162nd uye 163rd New York State Legislatures.