Comment: they had signed an affidavit

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they had signed an affidavit

and said they would vote for Romney. They weren't going to try to pull a "we weren't in the state so your rules don't apply". It wasn't a state convention rule. It was a rule about what delegates were supposed to do at the national convention.

Whether or not delegates were actually bound at this convention, the new rules make it so there is zero ambiguity on that going forward. Delegates are now officially bound, and the RNC will enforce it. That only happened because people threatened to break the binding rules, encouraging the Romney legal team to push the rule to be strengthened.