What would happen if Hillary Clinton really is having serious health problems to the point of having to drop out of the race? I’m not saying she is or that this is likely, but it’s an interesting mental experiment. Donald Trump, who is 70, could also have a breakdown that could force him to withdraw.
If the party’s candidate can no longer run, the Democratic National Committee would choose a replacement. The same holds true in the Republican party, though the RNC could choose to reconvene the convention delegates, an option not available for the Democrats. The national committees consist of members from each state. The Democratic National Committee has some 300 members; the Republican counterpart has 150.
A Rasmussen survey has found that in the event of Clinton dropping out of the race, 48% of Democrats would want her replaced with Bernie Sanders.