Your suggested system is indeed superior. But it would require the vast majority of states to give up electoral college votes to the less prominent party in their state. Willingly giving up power and influence is not especially common in individuals or groups - especially political parties. Maintaining power and influence usually trumps supporting a superior system. There are exceptions, of course, but they are rare.
Winner Take All is especially undesirable when applied by states for Electoral College votes (ECVs). It amplifies the "swing voter serenade" and the probability of electing a minority vote POTUS. Maine and Nebraska allocate their ECVs according to statewide winner and congressional district winner. However, if all states did likewise the probability of a majority ECV winner is low resulting in the selection of POTUS being performed by the House of Representatives.
A superior system is each state determining the top two ranked choice voting winners and allocating whole number ECVs proportionally. Such a system would be constitutional, reduce the "swing state serenade" and increase the probability of a majority ECV winner with a wide base of support.
Your suggested system is indeed superior. But it would require the vast majority of states to give up electoral college votes to the less prominent party in their state. Willingly giving up power and influence is not especially common in individuals or groups - especially political parties. Maintaining power and influence usually trumps supporting a superior system. There are exceptions, of course, but they are rare.
Winner Take All is especially undesirable when applied by states for Electoral College votes (ECVs). It amplifies the "swing voter serenade" and the probability of electing a minority vote POTUS. Maine and Nebraska allocate their ECVs according to statewide winner and congressional district winner. However, if all states did likewise the probability of a majority ECV winner is low resulting in the selection of POTUS being performed by the House of Representatives.
A superior system is each state determining the top two ranked choice voting winners and allocating whole number ECVs proportionally. Such a system would be constitutional, reduce the "swing state serenade" and increase the probability of a majority ECV winner with a wide base of support.