how many electoral college votes must a presidential candidate receive in order to win the election?
Informal definition. The margin of victory in a U.S. presidential election, with the exception below, would be the difference between the number of electoral votes won by the candidate with at least a majority of electoral votes (currently 270 of 538) and the number received by the second place candidate. Theoretically this number would be in the range of 2 to 538.