Whakaotihia te rerenga e whai ake nei: I muri i tana mahi poto hei kaitohutohu mo te kaupapa perehitini a Senator John Kerry i te tau 2004, ka tiimata a Lu ki te mahi mo Barack Obama i te tau 2005 i tana tari o te US Senate, i mahi a Lu hei kaiwhakahaere ture me te rangatira o nga kaimahi. I muri i te angitu o Obama
I te tau 2008 mo te kaupapa perehitini, i tohua a Lu hei kaiwhakahaere whakahaere mo te Kaupapa Whakawhiti Obama-Biden. I te wa i tohua ai e Obama a Lu hei Hekeretari o te Kawanatanga, i whakaahuatia ia e "The New York Times" hei "tetahi o nga Amerikana Ahia teitei rawa atu i roto i te kawanatanga o Obama".