Some experts believe it's a little bit of both.
12th Amendment is adopted, providing that electors cast separate votes for president and vice president. Previously, each elector voted for two candidates for president. The one with the highest number was elected president and the one who came in second was vice president. No candidate receives a majority of the electoral votes, and the House elects John Quincy Adams over Andrew Jackson and William H. Crawford. The Florida Legislature chooses the state's electors, a practice common in the early years of the Electoral College but generally abandoned in favor of popular elections after 1828, except in South Carolina, which discontinued the practice after the Civil War.