On November 2, the economic news network of Buenos Aires, Argentina, published a report entitled “electoral college: no one knows, but who are the 538 people responsible for electing the next president of the United States?”? 》About 150 million people are expected to vote in the U.S. general election on November 3. But strictly speaking, none of them can decide who will be the next president, and the task will be carried out by a much smaller number of individuals, 538 members of the electoral college. The presidential election in the United States is indirect. When voting on election day, voters should not only choose among the presidential candidates, but also select 538 voters representing 50 states and Washington, D.C., from the representatives designated by each party to form the electoral college. These voters will come together to vote for the president a month after the election. < / P > < p > the number of electors for the president of a state is equal to the number of its members in Congress. A total of 538 presidential electors were elected from 50 states and Washington. The number of electoral votes reflects the principle of equality of state power. On the eve of an election, Republicans and affiliated agencies across the country will aggregate the electoral lists. Most states and Washington have adopted the “winner’s all” rule, that is, all electoral votes in the state or district are given to candidates who have obtained a relatively large number of votes. The elected elector must swear to vote for the winning candidate in the state when the Electoral College votes. Therefore, the election results are usually calculated on the polling day of the general election according to the results of the state elections. Robert Alexander, a professor at Ohio Northern University, said: “the number of electoral votes is determined by the number of states in the house of Representatives and the Senate, so that states with smaller populations have the right to vote out of proportion to their population. On the other hand, the winner’s all rule strengthens the two party system and makes swing states with uncertain outcomes the most valuable. ” The electoral college system is controversial in many places. The biggest controversy is whether citizens need to vote for the president through a group of middlemen, especially whether voters must vote for the candidate who wins in the state. In fact, in the 2016 presidential election, seven voters changed their votes, an unusually high number. But even more objectionable is that the candidate with the most votes in the general election may not be elected president. < / P > < p > Americans feel as if they are directly voting for the president. Although they vaguely remember that there is an electoral college, many people may still think that they are voting for the president. It was only after the 2000 and 2016 elections that people began to raise awareness of the institution, but only those who were really interested in politics knew the details. In fact, few people know the names of the voters.