If your party weren't so worried about far right 'christian bonefied's' you've have a good candidate, but the fundamentalists and TBaggers have taken your party so far to the right, its choking out any who would have a real chance at winning on the national front.
Its become obvious that any republican candidate who has worked with Dems in compromising for reasonable outcomes, is not wanted in this current presidential race. The far righters that are running things now don't beleive in compromise, they have the fanatic mentality of "if your right, you have no reason to compromise". This attitude seems to come from their belief that god is the author of their belief system, so they won't sway from what they believe 'god directs' them to do. How many of your candidates have stated that 'god called them' ? These people are scarry.