John Judas McCain was a bridge too far.
Mitt Romney was a plunge into the political abyss.
Why do you keep hiding behind Romney? You accepted your goofy little parties nomination long before Mitt ended up the GOP nominee. It doesn't take a rocket scientist to see that you were going to run your vanity bid whether Santorum, Paul, Romney or anyone else was the Republican candidate. Stop pretending otherwise.
Further, good grief man, you helped run an Alan Keyes presidential campaign. Alan Keyes! This guy is one of the greatest political losers in American history. Keyes couldn't win a general election if you spotted him 25 points. I don't doubt you are pretty sharp when it come to general policy knowledge, but your political instincts are just incredibly awful.