the states will still want election to represent people (the majority.) For example, states will make a system where selection of delegates comes from slates submitted from each candidate before hand. The selection will be proportionate to beauty contest.
People forget that if minority forces their own will on the majority, but keeps free election, the majority will find the way to reverse it. For example, if RP supporters will take over GOP at Tampa in a hypothetical scenario, you can expect Santorum and Romney delegates to support Obama in Nov.