For college-age Americans who may not have time to follow politics, Elizabeth Warren is a Democrat running for her party's presidential nomination.

One of the parts of the oath of office for the president is to "support and defend the Constitution of the United States."

Warren would have a hard time with that, because she wants to change one of the most critical parts of the Constitution:  She wants to abolish the electoral-college system, instead decreeing that the president will be chosen by the winner of the national popular vote.

You might keep that in mind at election time.