With caucusing and voting about to begin in the 2016 U.S. presidential election , it is worth see back at seven of the biggest disorder and surprise in the country ’s history . If these historical chapters teach us anything , it is that all the experts can be wrong and that anything can happen :

1. Truman Defeats Dewey

In one of the most famous photograph in the history of U.S. politics , re - elect President Truman holds up a newspaper that had wrongly declared his demise . author : National Archives

Weeks before the 1948 presidential election , theWashington Starrana political cartoon showing a distraught President Harry Truman looking at a bulletin instrument panel full of dismal headlines about his re - election chances . In the sketch , Truman ’s adversary , Thomas Dewey , stands behind the President , simper and state , “ What ’s the enjoyment of rifle through with the election ? ”

No one thought Truman would acquire a 2nd full term . Dewey , the Republican governor of New York , was an incredibly pop human body , and Truman also faced clear revolt within his own popular company as Strom Thurmond made a run for the White House as the drawing card of the anti-Semite Dixiecrats . Despite a near national conviction that he would lose the election , Truman fight ferociously in the fall of 1948 . During a campaign around the commonwealth thatcoverednearly 22,000 miles , Truman convinced voters to give him another four years . And though theChicago Tribune(in)famously declared that “ Dewey Defeats Truman ” in its morning - after headline , the count of factual votes showed President Truman had convincingly flap his New York rival .

Election Upsets

2. Yes We Can: Obama Stops the “Inevitable”

Barack Obama on the campaign trail in 2008 . Source : Flickr

Hillary Clinton has been“inevitable”before . But unlike today , when she confront only two , comparatively weak basal challengers , eight age ago she was up against a field that included a young senator from Illinois , named Barack Obama .

Barack Obama ’s 2008 defeat of the Clinton presidential machine is one of two nomination upsets that makes our list . As a senator from New York , Clinton , then as now , was a highly regarded figure in the popular company in her own right , as well as the wife of a very pop former chairperson .

Electoral Upsets Dewey Truman

In one of the most famous photos in the history of U.S. politics, re-elected President Truman holds up a newspaper that had wrongly declared his demise. Source:National Archives

Senator Obama , on the other hand , was two - long time on the job in the Senate and , before the campaign , a comparatively unsung human body . His talent as a nominee as well as several key indorsement bear on him into the lead in January 2008 , but it would take six months of primary vote before Clinton dropped out and endorse Obama in June . He took his content of “ Change We Can Believe In ” and “ Yes We Can ” into the cosmopolitan election couple - up with John McCain , won decisively , and became the first African American President of the United States .

Electoral Upsets Barack Obama

Barack Obama on the campaign trail in 2008. Source:Flickr