In my conception of the Electoral College, it is made up of the oligarchical class of the USA. Merchant family heads, land owner heads, military leaders, some church leaders, guild leaders, mayors etc. They are technically totally free to vote their conscience but they generally fall into the red blue or white faction, though there are independents.The Electors could be chosen by the state legislatures, as it is currently. But that leads to another issue-- if Boston sends Electors to the College, isn't that like saying that the Boston city government is the real State of Massachusetts and not the autonomous state based in Hartford? To keep all the legal claims in order, the Electors may have to be decoupled from the states-- every one of the effective subunits of governments (counties, municipalities) sends Electors, varying with population.
There's also the question of whether the Electors should be totally free to vote their conscience or totally bound by choices made elsewhere. This probably varies over time, as the sub-unit legislatures pick predictable or unpredictable people as Electors.
The House of Representatives is also divided by the Red White and Blue factions. However, the people who make up the House, are not usually the electoral college. Most of them are too busy to spend all their time in Baltimore. Rather, they send relatives who are not in the Electoral College, like a younger brother or an adult son in their stead (provided they are elected)