Kammala wannan magana: Bincike ya nuna karamin koma baya ga dan takarar shugaban kasa na 2008 Barack Obama bayan
babban taron jam'iyyarsa a watan Agusta, amma kamar yadda aka zata, yawancinsa ya ɓace a lokacin da kuma bayan taron jam'iyyar Republican a mako mai zuwa, wanda ya ba da dan takarar GOP John McCain karamin jagoranci a cikin kuri'u da yawa. Matsayin Nielsen ya bayyana cewa taron jam'iyyar na wannan shekara ya kasance mafi yawan kallo, tare da taron Jam'iyyar Republican da ke kusa da 'yan Democrat.