I'm uncertain on this. Some people make excuses .. others just sit with it ...
If Romney loses, however, the fault will be with the Libertarian Party that didn't do the honorable thing and fall on its sword encouraging those who would vote for Johnson to vote for Romney.
If Obama loses, the fault will be with American citizens, who suddenly became politically astute enough to realize that Obama is killing America, dismantling America slowly, in the name of his Multi-Cultural Internationalist ideological mindset and its compulsion to create a one-world borderless nationless U.N. government.
Ultimately, from a party perspective, if you field a truly great candidate, one whom the people recognize as obviously having what it takes, and you present that candidate within a political philosophy held by the great majority of Americans, you don't need to make excuses, because you don't lose.
On Nov. 7th, the losing party will simply have to accept that they didn't do a good enough job of selling their candidate to the centrists, and the winning party will simply have to count their very lucky stars.