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 Democratic Party bylaws states that “a special meeting to fill a vacancy on the national ticket shall be held on the call of the chairperson”. …
Although Mrs Clinton is expected to make a full recovery from what appears to be a routine illness, analysts have floated names of those who could take on the party mantle should she be forced to drop out.
They are: Clinton running mate Tim Kaine; grassroots darling and Mrs Clinton’s primary challenger Bernie Sanders; and Vice-President Joe Biden.
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 Democratic nominee George McGovern in the 1972 race, was forced to quit after it was revealed that he suffered from depression.