Of the political assassinations of US history, one of the most shocking was the assassination of president-elect Franklin D Roosevelt by Giuseppe Zangara on February 15 1933. John Nance Garner became president according to the 20th amendment. Some have speculated that Zangara's real target was Chicago Mayor Anton Cermak, who was almost shot instead. So what if Cemark was killed instead of Roosevelt? What would have his presidency been like compared to Garner's?