During his campaign , he debated McCain twice , once in Tucson and once in Flagstaff .
During his election campaign , he debated McCain twice , once in Tucson , and once in Flagstaff .
During his election campaign , he debated McCain twice , once in Tucson , and once in Flagstaff .
أعد صياغة هذه الجملة: During his campaign , he debated McCain twice , once in Tucson and once in Flagstaff . خرج: