March 3, 2026
KEY POINTS FROM THIS ARTICLE
— The primary season begins Tuesday night, and several sitting House members are facing credible primary opposition.
— Typically, only a handful of House incumbents lose renomination in a given year.
— In the postwar era, only about an average of 6.5 incumbents have lost renomination each cycle, and the renomination rate for House incumbents who seek another term is greater than 98%.
— However, that also means that it would not take many incumbent losses for 2026 to rank as a big year, historically, for incumbent primary defeats.