The Twelfth Amendment to the United States Constitution provides the procedure for electing the president and vice president. Under the original Constitution, each member of the Electoral College cast two electoral votes, with no distinction between electoral votes for president or for vice president. The presidential candidate receiving the greatest number of votes—provided that number was at least a majority of the electors—was elected president, while the presidential candidate receiving the second-most votes was elected vice president. In cases where no individual won the votes of a majority of the electors, as well as in cases where multiple persons won the votes of a majority but tied for the most votes, the House of Representatives would hold a election to select the president. In cases where multiple candidates tied for the second-most votes, the Senate would hold a election to select the vice president. The first four presidential elections were conducted under these rules.