Ideally we will see a left wing resurgence under Trump.
But even if we do, the democratic party itself probably won’t move left by much. Which means it is up to the voters to use primaries from the left and ballot initiatives to achieve our goals.
I hope you’re right. I mean, there were occasions in the first half of the twentieth century where it didn’t work out just like you drew it up. For example.
Better than that (or worse from the GOP long-term perspective), they seem to have recalibrated the left/right axis in such a way that what was originally center-right is now centrist, and what was centrist is now center-left. All that griping about RINOs and the normalization of the Freedom Caucus/Tea Party as GOP mainstream have shifted what it means to be left/right wing.