Presidential Election Compromise at the Constitutional Convention

At the Constitutional Convention of 1787, one of the most contentious issues was the method of electing the president of the United States. Delegates were divided between various proposals, including direct popular election and election by Congress. This debate reflected deeper concerns about the nature of democracy and representation. Ultimately, the decision reached involved compromise, influencing the electoral process for generations to come. Given this historical context, what was the primary compromise reached regarding the presidential election?