Wanted: One Republican with backbone

This week, Sen. Elizabeth Warren (D-MA) became the first Democrat to throw her proverbial hat in the ring. She's a dynamic candidate with a winning message and she'd make a great president, but she's hardly alone in itching to challenge Donald Trump in 2020.

There are, in fact, so many potential Democratic candidates for 2020 that the challenge for the Democratic National Committee will be in finding a stage big enough to hold them all. In 2016, Republicans had so many contenders