People in politics are part of that, but within the two major parties we have no allies, even partial. I already answered the solution partially back here, but here it is again:

Voting doesn’t do much, though. I support voting for working class orgs like PSL, but not for the DNC or GOP, and I know it’s very unlikley that PSL will win electorally. Leftists understand that the path to change is via organizing, not by supporting orgs that work against our interests, and we know we can’t magically turn a capitalist org into a proletarian one by wishcasting.

We need to organize. Unions aren't up to the task, sure, but creating a working class party like what PSL is doing, building them up, and integrating within the working class is how you can leverage that to tilt the system and even overthrow it if conditions are right for that.