I see the republican primaries already shaping up. The GOP will fight hard to keep moderate left leaning republicans in office.
The party will attempt to water down the conservative republican primary message with multiple moderate left leaning folks like Romney, Christie, Jeb Bush, Paul Ryan, Rubio, Perry, Scott Brown.
That strategy might well be a bad one for the establishment. The reason Romney won the nomination last time was that he was the only moderate, establishment candidate while there were many other candidates competing for conservative support (Santorum, Bachman, Perry, Gingrich, Cain, etc.). The conservative candidates split the conservative ABR (anyone but Romney) vote and allowed Romney to win.
If the GOP-e is actually trying to win by fielding multiple candidates, let them. It is then incumbent on us to come together to support ONE candidate (maybe Cruz?) and take the nomination by splitting the establishment support.