The animosity between William Howard Taft and Theodore Roosevelt changed the primary process forever.
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Lessons from the 1912 Republican Convention: Birth of the Modern Primary

Producer: Matt Spolar
The animosity between William Howard Taft and Theodore Roosevelt – who were at one point in time good friends – was palpable, with insults like puzzlewit and honeyfugler being thrown about. Their battle transformed the primary process and American politics forever.