Allow me to expand and clarify… Multiple people run for the same office within primaries. Some of them lean more left than others. You can support them by actually voting in the primaries (and especially in state elections), maybe even donating a few bucks or volunteer time as well. But you have to actually vote. You can also write to existing Representatives and lay out your concerns. Enough people do that on an issue, they’ll understand your concerns at least in terms of marketing. Or just poo poo everything. Write social media comments or mouth off at family dinners, both of which are meaningless gestures that change nothing.