read post 19.
open primaries or closed primaries, it does not matter.
We will pick the guy who is next.
We do this because the guy who is next has been vetted the time before, campaigned in front of a lot of people and is a proven campaigner, has seen and understands how a national campaign works and has made a lot of donors believers in him.
We will pick from Ryan, Romney, Santorum or Bush.
Lucky us...