The Twelfth Amendment to the US Constitution detailed new rules for electing the President and the Vice President. Each Elector originally cast votes for two people and the man who got the most Electoral College votes, as long as it was a majority, became President. The next greatest vote getter became Vice President. This system worked until 1800, when the Republican Party gave Jefferson and Burr the same exact number of votes for President. That sent the tie-breaker to the House of Representatives where the Federalists tried to sabotage the works by electing Burr over Jefferson. Jefferson won in the end, but only after much chaos and bad feelings. Under the Twelfth Amendment, each Elector now casts one vote for President and one vote for Vice President.