According to Hoyer's office, the vote switchers in question were Issa, Valadao, Denham, Walden, Walters, Poliquin, and Young.
Valadao, Denham and Poliquin are gone next year, then.
Valadao and Poliquin are not in districts where this vote is going to hurt them.. Not that an irrelevant vote like this would have an effect on a congressional race anyway.
Valadao is from a D+2 district with a growing Hispanic population. Poliquin was basically a rental from the beginning. Trump is on the ballot. They're gone.
Not all D+2 districts are the same. It's not gonna hurt Valadao in a central valley district, and his opponent will not likely attack him on it. Same for Poliquin.