Rubuta ci gaba ga wannan sakin layi - A gaskiya, duk shugabannin da suka mutu daga baya a ofishin, kamar Harrison, sun lashe zaben shugaban kasa a cikin shekara ta ƙare a zero (1840 ta hanyar 1960). Wannan yanayin bala'i ya zama sananne da La'anar Tippecanoe, ko La'anar Tecumseh, sunan shugaban Shawnee wanda Harrison ya yi yaƙi da shi a Yaƙin Tippecanoe na 1811. Wani lokaci kuma ana kiranta da labarin "Zero Factor", Ronald Reagan, wanda ya tsira daga yunkurin kisan kai a 1981
(Kwana 69 bayan da ya karbi mukamin) kuma ya rayu don kammala cikakkun sharuddan biyu.