Democrats are now in a reasonably strong position to hold the Senate and perhaps expand their majority. A major reason for that is that Donald Trump took it upon himself and was largely allowed to pick the candidates. Almost all of them are terrible candidates: Oz, Vance, Masters, Walker. These are simply terrible candidates. They could win. But it will be in spite of their terribleness not because of it. Kelly, Warnock, Fetterman, Ryan are all pretty good candidates. In some cases, in terms of their fit for the state in question they are near perfect candidates. Tim Ryan may be the best example of that even though he’s the least likely of the four to win. But all would be in much more challenging contests if they were opposed by even generic, non-crazy-sounding Trumpite Republicans.