What happens if nobody accepts the nomination?
Then the terrorists win.
The Speaker of the House takes over?
Federal electors in theory can vote for anyone eligible to be President, although many states have laws requiring them to vote for the person they are pledged to vote for (which would be their party’s nominee). In the completely impossible scenario of no party being able to find someone to accept their nomination, then the electors could draft someone.
First off, never gonna happen. It’s too good a gig for nobody to accept the nomination of any party, run and win.
Second, if it happened, the Electoral College would still meet, and somebody would come out of that process having been chosen President. And if the Electoral College couldn’t determine the winner, the House of Representatives would.
See U.S. Constitution, Art. II, Sec. 1, and Amendment XII.
I’d do it.
And if by some fluke the Electoral College threw up its hands and didn’t draft anyone, then by Inauguration Day the Congress will determine who exercises the office of Presidnet, under the authority of the Twentieth Amendment:
If things get to the point where nobody wants to run for President, then things are at the point where there’s going to be a constitutional crisis anyway. It hardly matters what rules we make now; they’ll be ignored by then, if things ever get that fucked.
This is the real answer.
The above reminded me of an local election for some public works office where nobody ran. Some young man wrote in himself and he was the only one to do so and got he position.
It would be a good thing if Nobody ran for president, because Nobody can fix the economy and Nobody can solve all the world’s problems.
We go find Cincinnatus.
I agree with Indistinguishable’s answer, but I’m still going to say this:
From Northern Piper’s post #7
“[T]he Congress may by law provide for the case wherein neither a President elect nor a Vice President elect shall have qualified, declaring who shall then act as President, or the manner in which one who is to act shall be selected, and such person shall act accordingly until a President or Vice President shall have qualified.”
Notice the word “may”? They don’t have to if they don’t want to. 
Very nice. 
Jimmy McMillen would step in.
http://www.rentistoodamnhigh.org/
This guy is actually on the ballot for the governorship of New York State and was part of the gubernatorial debate.
There are thousand of other like him out there, including Pat Paulsen (in his time),
. . . so why debate an impossible question.
There’s one thing I’m unclear on. What’s his position on monthly housing rates?
Sarah Palin promised to take the job if no one else wanted it.
I’ll nominate basilmarceaux.com.
It doesn’t matter if the Electoral College picks a name out of hat or Congress picks the first cab driver they find on the street. No one who doesn’t want to become President would ever do so, since they’re required to take the oath/affirmation of office. (Rules out horses, too, since nobody talks to a horse.)
He’s still in Ohio, right?