Electors in each state are chosen by caucus meeting financial contribution proportional vote popular vote

Electors in each state are chosen in a caucus meeting. A caucus is defined as a meeting where members of political parties or movements gather. The attendees meet to discuss group policies, to coordinate members’ actions or to nominate candidates for various offices. Take for instance, in United States; caucuses are made to select election candidates. The first step in choosing electors is, the state’s legislative body will choose their state electors. The number of electors in each state shall be equal to the number of Senators and Representatives to which each state is entitled. But it shall be noted that a Senator or Representative or any person with office will not be appointed as an elector. Next is each party will then choose the electors for their party. 

lincoln won 212 electoral votes to mcclellan's 21 votes, and lincoln beat mcclellan. is the main reason lincoln won in 1864.

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