What changed the problem in the original Constitution in which the runner-up in the presidential election became vice president?

Question

Quizplus · Accepted Answer

The Twelfth Amendment, ratified in 1804, replaced the original method of electing the president and vice president with a system where electors cast separate ballots for each office. This prevented the runner-up in the presidential election from automatically becoming vice president, which had been a flaw in the original Constitution.

What Changed the Problem in the Original Constitution in Which