Progressives have as long a road ahead as the libertarians have had in infiltrating the right. Libertarians have had a few years head start in infiltration of the Republican party but Progressives are relatively new to having positions; and there are VERY VERY few progressives in US govt at present. More than 2015 and before but not enough to make more than news articles just yet.
Well, I hope you can keep their feet to the fire. I never had faith in any politicians but that’s because nobody’s ever represented me properly. Progressives do a LITTLE bit -more palatable – but they’re basically instituting what was good about FDR era but modernizing it, which is more being neighborly than anything; not a bad thing and more tolerable than what we have at present but it’s still far away from my own stances on things.