How had the american election system changed by the election of 1828?

Members of the Electoral College were elected by popular vote, not their state legislatures.

Explanation:

a). Women and blacks were eligible to serve as electors in the Electoral College.

b). State legislators earned the right to serve as electors in the Electoral College.

c). Members of the Electoral College were elected by popular vote, not their state legislatures.

d). State legislatures continued to elect 50% of the electors, but the popular vote determined the rest.

c

explanation:

c