Conversation so far:
who decided the election of 1800 since it ended up in a deadlock
On February 17, 1801, the House of Representatives, breaking a tie in the Electoral College, elected Thomas Jefferson president of the United States.
what caused the 1800 election to end up in a deadlock
The 1800 election revealed a flaw in the US Constitution: candidates for president and vice president were on the same ballot, so running mates could be running against each other.

Question: how was the flaw solved
Self-contained rewrite: how was the flaw in the us constitution solved