State level electoral colleges, if constitutional would resolve population centers from controlling the outcome of literally the entire state during state and federal elections.
There are a number of states where the population centers have disenfranchised state voters for decades.
New York State for one. Those of us in red counties, who vote for Republican Governors, U.S. Senatorial, Attorney General, etc., candidates are always disenfranchised. New York City, and its surrounding blue counties always elect those offices. Our votes don't count one bit.