Article II, Section 1 of the original Constitution provided for Electoral College electors to submit single ballots with two names, but no designation of president and vice president. The candidate with the highest total, if a majority, would become president and the second place finisher would become vice president. Each state would have electors equal to the total of senators plus representatives.
Problems developed almost immediately. In 1796, the system yielded a president from one party and a vice president for another. In 1800, two candidates from the same party received the same number of votes, throwing the matter into the House of Representatives where each state would cast a single vote. The emergence of partisan political activity caused the failure of the original constitutional plan.
The 12th Amendment provided the following remedies: