The birth of what lead to problems with electoral college system in 1976 & 1800?

The birth of the political party system in 1796 and 1800 lead to problems with the electoral college system.

Explanation:

The presidential elections of the year 1796 brought to surface a great flaw in the election systems. According to the contemporary system, the candidate that secured the highest votes would become the president and the candidate with the second-highest votes would become the vice-president. In the 1796 elections, the candidates that secured the highest and the second-highest votes came from two different parties. Hence, the elections turned out to be a mess and the United States government had to function with two supreme leaders from ideologically different backgrounds.