1948 United States presidential election in Illinois
Illinois was won by incumbent President Harry S . Truman ( D–Missouri ) , running with Senator Alben W . Barkley , with 50 . 07% of the popular vote , against Governor Thomas Dewey ( R–New York ) , running with Governor Earl Warren , with 49 . 22% of the popular vote . 
<triplet> Harry S. Truman <subj> D <obj> member of political party <triplet> D <subj> R <obj> opposite of <triplet> Alben W. Barkley <subj> D <obj> member of political party <triplet> Thomas Dewey <subj> R <obj> member of political party <triplet> R <subj> D <obj> opposite of <triplet> Earl Warren <subj> D <obj> member of political party <subj> R <obj> member of political party