Then what will?
The failure of the GOP to nominate an opponent to Obama (Romney is not an opponent) is going to provoke a political crisis the scope of which we have not seen since 1860.
There are several possibilities, none of them very good.
First, there will be a straight-up Obama-Romney contest which will lead to Obama's reelection.
Second, a true opponent will emerge AFTER Romney locks it up and BEFORE the convention.
Third, the party will split AT the convention and there will be no official nominee.
Fourth, there will be widespread violence BEFORE the convention, a "can't we all just get along" ticket will emerge (Richardson-Huntsman, Boren-Snowe, etc), and conservatives will be locked out completely. I could go on.
The main point is that the "fundamental transformation of the United States of America" was and is a call for war, and, one way or another, war is coming. The last normal prewar election has already happened. The first postwar election can't happen until conservatives are eliminated "by any means necessary" OR the Left is eliminated, again, by any means necessary.
Interesting times.