If you look at Ohio, Florida, and Virginia (I am going from memory here) - the votes gotten by the libertarian candidate represented a large portion of votes needed to swing the state to Romney. And those 3 states' EC votes would have put Romney a lot closer, giving him 266 EC votes. Add in Colorado (numbers below) and he would have won.
Florida: 29EC votes; difference was 61,000 votes, L. got 44,000 votes
Ohio: 18E votes: difference was 104,000 votes, L got 47,000
Virginia: 13EC votes: difference was 116,000, L and Constitution parties got 44,000 .
Colorado: 9EC votes: difference was 113,000, L and Constitution got 37,000 .
Clausewitz, in his treatise "On War" dedicates an entire chapter to "Moral Forces" , what we would term "an organization's morale" .
Did crappy software contribute? Perhaps.
But wars and elections are not won by software, but by people.
That critical Libertarian slice or whatever you want to call it, of the traditional Republican base, was demoralized over Ron Paul and that resulted in an Obama victory.
Description of rule changes at RNC convention: http://articles.latimes.com/2012/aug/28/news/la-pn-ron-paul-...