Incumbent Senators Who Could Have Serious Primary Challengers

[Holmes]

Flake is the only one I can think of, and he will win easily. No Democratic incumbent will be seriously challenged in the primary.

If McCain of all people didn't get a strong challenge last year, I can't imagine Flake will.

Yeah, it probably won't be a "serious" challenge. Maybe Hatch?

Possibly. For Democrats, I can only see Menendez getting a serious primry challenge.

Mm, Menendez is the one the "Justice Democrats" should be targeting, not Manchin. He's actually vulnerable and New Jersey is an easy state for a Democrat to win and is safe to be as left-wing as s/he wants to be. But what do I know?

[Holmes]

Even if you're playing devil's advocate, there is no comparing California to Vermont.