ON A HOT SUMMER DAY IN EARLY AUGUST 1912, Theodore Roosevelt stood before an ecstatic crowd of 15,000 in the Chicago Coliseum to accept the new Progressive Party’s nomination for President.1 After speaking for well over an hour, Roosevelt closed by urging his followers to gird themselves for a “great new fight in the neverending warfare for the good of humankind...” Arms outstretched, Roosevelt thundered: “We stand at Armageddon, and we battle for the Lord.” The audience had already yelled themselves hoarse, but with these words there was pandemonium, ending with a reverential singing of The Battle Hymn of the Republic. Asked shortly after how he felt, Roosevelt declared “I feel as fit as a bull moose,” instantly giving the new party its nickname, the Bull Moose Party.