We are now two weeks away from the 2018 midterms — which means that much of the political world is already focused on the 2020 presidential election. Indeed, the moment has already come for Democratic presidential hopefuls to insert their names and profiles into the public imagination. Historically, that means they should be kissing babies, unveiling smart new ideas, and dazzling us with their statesmanlike personae. Instead, many seem to be gearing up for that most miserable of competitions: racing President Trump to the bottom. Don't do it, Democrats.