Legion Troll
A fine upstanding poster

What happens if a candidate for the White House is forced to quit the race? Who steps up to fill their shoes?
In recent US presidential history, there's been only one case of a candidate dropping out.
Senator Thomas Eagleton, who was the running mate of Democrat nominee George McGovern in the 1972 race, was forced to quit after it was revealed that he suffered from depression.
The US Constitution gives no guidance on instances when a candidate is unable to finish a political race.
The procedures are found by delving into the internal regulations of the political parties.
Article two, section seven of the Democrat Party bylaws states that "a special meeting to fill a vacancy on the National ticket shall be held on the call of the Chairperson."
At the Democrat Party gathering, the decision would be based on a majority vote by those present.
But there's little precedence to guide their choices.
Democrat party officials could choose anyone who meets the criteria to serve in the nation's highest office.
http://www.seeker.com/what-happens-if-a-us-presidential-candidate-drops-out-2003389404.html