Must cast their state's formal votes for president.

Presidential electors

Presidential Electors must cast their formal votes to elect President.

Explanation: As we know that USA is comprised of 50 states. Each with their own governing bodies. Because the head of the state is single thus, all states are given equal right to vote for the president election. So, presidential electors is a body of electors chosen in different states and whose sole duty is to vote for president and vice president of United states of America.

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