Who should be the Republican candidate for President in 2016?

I don't really have a favorite as it stands now, but I'd like to see Ben Carson make a run. Were he to get the nod I doubt he would win, so I'd rather him not run. Overall I think he would be the type who could really cross party lines from a common sense point of view. People today want to think themselves as someone of high intellect, but in reality they over-analyze things and common sense gets tossed out.