Hindsight is often too late to make a difference, luckily that's not the case with the republican primaries. Still, there are slim pickings.
Here's how I see their choices. 
 
Unfortunately, Jon Huntsman didn't win enough hearts, he's probably the brightest & most balanced.
Romney is a person willing to change his stance on anything as long as he can win. I think this will be his demise.
 
Newt, also bright, is a creep, a slug!
 
Perry, I was reminded by friends in Texas, he won reelection because there were 4 others in the race, he got 39%. Hardly anything to brag about. IMO, he comes off as a buffoon.
 
Ron Paul, has his groupies. He's authentic & unrealistic. He should live on an island with other Libertarians. ;))
 
Santorum, smart guy, should be a priest, except for having all of those kids ;))
 
Bachman, beautiful woman, has worked hard, doesn't have a prayer.
 
Cain, has outlasted his 15 minutes. His book sales will help his retirement.
 

DO SOMETHING!