title: Head to head: Bush vs Kerry.
authors.forename: Colin
authors.initials: C
authors.lastname: Macilwain
authors.forename: George W
authors.initials: GW
authors.lastname: Bush
authors.forename: John
authors.initials: J
authors.lastname: Kerry
mesh_terms: D026683:Advisory Committees / Q000592:standards; D000818:Animals; D023482:Bioterrorism / Q000517:prevention & control; D002417:Cattle; D003247:Conservation of Natural Resources / Q000331:legislation & jurisprudence / Q000639:trends; D004641:Emigration and Immigration / Q000331:legislation & jurisprudence; D016643:Encephalopathy, Bovine Spongiform / Q000517:prevention & control; D035082:Federal Government; D030841:Food, Genetically Modified; D017752:Greenhouse Effect; D006801:Humans; D009689:Nuclear Warfare / Q000191:economics; D011057:Politics; D035845:Research Embryo Creation / Q000331:legislation & jurisprudence; D012586:Science / Q000191:economics / Q000331:legislation & jurisprudence*; D012637:Security Measures / Q000331:legislation & jurisprudence; D013026:Space Flight / Q000639:trends; D014481:United States; D014486:United States Food and Drug Administration / Q000592:standards