What's the Biggest Upset About Time?

I think Jimmy Carter was very low at the polls in 2016, right? So I wouldn't be unprecedented. But when those candidates win, it's because you have a very weak tap of the field. And I just don't think that a field with the former president and then a guy who has managed to tie the former president basically in polls is going to open up much. It will be interesting to see if Haley prompts anyone else to get in sooner or if we're going to have another lag before other folks start jumping in.