[mmichaels1970]

How is this legal ?

I would think it's legal. The party gets to set it's own rules for who it nominates. If people don't like it, they are free to join or start another party.

That said, the language of this affirmation (at least as reported by CNN) seems pretty weak. We can all "intend" to do a lot of things. Intentions change all the time.

CNN is trying to set up a "gotcha" where they can overblow this story as a Trump flip if he signs the pledge. I think he should sign it.

[E. Pluribus Unum]

I think he should draft a pledge for the SC GOP that they will support him if he wins the nomination. He’ll sign theirs if they sign his.

[stephenjohnbanker]

So do I.

[Iscool]

I would think it's legal. The party gets to set it's own rules for who it nominates. If people don't like it, they are free to join or start another party.

Can the State prevent Trump from being on the ballot as a third Party???

[ryderann]

I can remember that KKK fellow running as a Republican for some office in Louisiana about 30 years ago. The Republican Party said that couldn’t do anything to stop his running as a Republican.