Tuhia he haere tonu mō tēnei wāhanga - I te tau 2007, ka haere anō a O'Malley Dillon ki te mahi mō John Edwards i tana pakanga perehitini o te tau 2008 hei kaiwhakahaere o te rohe o Iowa, ā, hei kaiwhakahaere tuarua mo te pakanga. Whai muri i te whakakorenga o Edwards, ka uru atu ia ki te kaupapa perehitini a Barack Obama
mō te pōtitanga whānui hei kaiwhakahaere o te rohe whawhai. Whai muri i te kowhiringa a Obama, i mahi ia i te whakawhiti perehitini hei kaiwhakahaere o nga kaimahi, katahi ka utua hei kaiwhakahaere whakahaere mo te Democratic National Committee i raro i a Tim Kaine.