Kammala jumla mai zuwa: A shekara ta 1954, an zabi Griffiths a matsayin dan Democrat daga gundumar majalisa ta 17 na Michigan zuwa 84th Congress kuma daga bisani aka sake zabar shi zuwa tara masu zuwa na majalisa, yana aiki daga Janairu 3, 1955 zuwa Disamba 31, 1974 a gidan Amurka. Ta zauna a matsayin wakili a Majalisar Dattijai ta Democratic a shekara ta 1956 da kuma a
A shekara ta 1968. Ba ta kasance dan takara ba don sake zabar ta zuwa majalisar wakilai ta 94 a shekarar 1974.