Kammala wannan magana: A ƙarshen 2007, Kennedy da 'yan uwansa mata Kerry da Kathleen sun sanar cewa za su goyi bayan Hillary Clinton a zaben shugaban kasa na Jam'iyyar Democrat na 2008. Bayan da
Taron jam'iyyar Democrat, Kennedy ya yi yakin neman zaben Obama a duk fadin kasar. Bayan zaben, an sanya shi a matsayin mai jagorantar mai kula da EPA na Obama.