Does one party get primary challenges at a higher rate than another party?

If this question is not directly answerable, what criteria would I use to determine this rate?

  • 2
    I think that virtually all notable elections have primarily challengers, it's just that most of the time the primary challengers are not notable and don't have a hope of winning. Commented Mar 13, 2017 at 19:32
  • Good point @DavidGrinberg. The primary challenges that stick out are the ones that are shocking or significant, like a legitimate challenge to a many-term incumbent. That is in contrast with say a primary challenge from "crazy Dave" who runs in every election because he is bored.
    – Freiheit
    Commented Mar 13, 2017 at 19:40
  • 2
    @Freiheit - "crazy Dave" who's bored... ironically, that's how many described Trump at the start of the primary :)
    – user4012
    Commented Mar 13, 2017 at 21:50
  • 2
    Supposedly Getting Primaried: The Changing Politics of Congressional Primary Challenges (Legislative Politics and Policy Making) by Robert G. Boatright studied this.
    – Brythan
    Commented Mar 14, 2017 at 3:02


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