Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  N'ọnwa Mee afọ 2002, Obama nyere iwu ka e mee nnyocha iji mata ma ò nwere onye ga-anọchi ya n'ọsọ a na-azọ na Senate n'afọ 2004. O mepụtara kọmitii mkpọsa, bido ịnakọta ego, ma jikọta onye ndụmọdụ mgbasa ozi ndọrọ ndọrọ ọchịchị David Axelrod site na August 2002. Obama kwuputara ọkwa ọkwa ya na Jenụwarị 2003. Obama bụ onye mmegide mbụ nke nchịkwa George W. Bush nke 2003 na Iraq. N'abalị abụọ n'ọnwa Ọktoba n'afọ 2002, ụbọchị onyeisiala Bush na ndị ụlọomeiwu kwenyere na nkwekọrịta nkwekọrịta ahụ nyere ikike maka agha Iraq, Obama kwuru okwu na nnọkọ mgbagha nke mbụ na Chicago megide agha Iraq, ma kwuo okwu megide agha ahụ. Ọ gwara ndị ọzọ na-emegide agha na March 2003 ma gwa ìgwè mmadụ ahụ na "ọ bụghị oge" iji kwụsị agha ahụ. Mkpebi nke onye Republican na-achị achị Peter Fitzgerald na onye Democratic ya bụ Carol Moseley Braun ka ọ ghara isonye na ntuli aka mere ka e nwee asọmpi nke Democratic na Republican nke gụnyere ndị na-aga ime 15. Na ntuliaka nke Machị 2004, Obama meriri na mmeri a na-atụghị anya ya nke mere ka ọ bụrụ kpakpando na-arị elu n'ime National Democratic Party, malitere ịkọ nkọ banyere ọdịnihu onye isi ala, ma duga na mbipụta nke akwụkwọ ncheta ya, Nrọ site na Nna m. N'ọnwa Julaị n'afọ 2004, Obama kwuru okwu bụ isi n'ọgbakọ Democratic National Convention nke afọ 2004, nke nde mmadụ 9.1 lere anya. A nabatara okwu ya nke ọma ma bulie ọnọdụ ya n'ime Democratic Party.Onye mmegide Obama na-atụ anya na ntuli aka izugbe, onye mmeri nke Republican bụ Jack Ryan, wepụrụ n'ọsọ ahụ na June 2004. Izu isii ka e mesịrị, Alan Keyes nabatara nhọpụta ndị Republican iji dochie Ryan. N'ọnwa Nọvemba afọ 2004, Obama ji pasentị iri asaa merie na ntuliaka.  Ajụjụ: Olee ntuliaka Obama meriri?
Nọvemba 2004